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\u9023\u7d50\u4ee3\u5165\u6f14\u7b97\u5b50\u306f\u3001\u7279\u306b\u7e70\u308a\u8fd4\u3057\u51e6\u7406\u5185\u3067\u6587\u5b57\u5217\u3092\u69cb\u7bc9\u3059\u308b\u5834\u5408\u306b\u52b9\u7387\u7684\u3067\u3059\u3002\u5185\u90e8\u7684\u306b\u306f\u3001\u65b0\u3057\u3044\u6587\u5b57\u5217\u3092\u4f5c\u6210\u3059\u308b\u4ee3\u308f\u308a\u306b\u65e2\u5b58\u306e\u6587\u5b57\u5217\u3092\u62e1\u5f35\u3059\u308b\u305f\u3081\u3001\u30e1\u30e2\u30ea\u5272\u308a\u5f53\u3066\u304c\u5c11\u306a\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n PHP\u3067\u306f\u3001\u30c0\u30d6\u30eb\u30af\u30a9\u30fc\u30c6\u30fc\u30b7\u30e7\u30f3\uff08\u201d\uff09\u5185\u3067\u5909\u6570\u3092\u76f4\u63a5\u5c55\u958b\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u30c9\u30c3\u30c8\u6f14\u7b97\u5b50\u3092\u4f7f\u308f\u305a\u306b\u6587\u5b57\u5217\u3068\u5909\u6570\u3092\u9023\u7d50\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n \u5909\u6570\u5c55\u958b\u306f\u3001\u7279\u306b\u77ed\u3044\u6587\u5b57\u5217\u3092\u9023\u7d50\u3059\u308b\u5834\u5408\u306b\u53ef\u8aad\u6027\u3092\u9ad8\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u305f\u3060\u3057\u3001\u8907\u96d1\u306a\u5f0f\u3084\u914d\u5217\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u5c55\u958b\u3059\u308b\u5834\u5408\u306f\u3001\u6ce2\u62ec\u5f27 \u5909\u6570\u5c55\u958b\u3092\u4f7f\u7528\u3059\u308b\u969b\u306e\u6ce8\u610f\u70b9\u3068\u3057\u3066\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u5834\u5408\u304c\u3042\u308a\u307e\u3059\uff1a<\/p>\n\n\n\n \u305d\u308c\u305e\u308c\u306e\u9023\u7d50\u65b9\u6cd5\u306b\u306f\u9577\u6240\u3068\u77ed\u6240\u304c\u3042\u308a\u307e\u3059\u3002\u5c0f\u898f\u6a21\u306a\u9023\u7d50\u3067\u306f\u3069\u306e\u65b9\u6cd5\u3067\u3082\u5927\u304d\u306a\u9055\u3044\u306f\u3042\u308a\u307e\u305b\u3093\u304c\u3001\u5927\u91cf\u306e\u6587\u5b57\u5217\u9023\u7d50\u3092\u884c\u3046\u5834\u5408\u3084\u3001\u7279\u5b9a\u306e\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u3067\u306e\u4f7f\u7528\u306b\u3088\u3063\u3066\u3001\u6700\u9069\u306a\u9078\u629e\u306f\u5909\u308f\u308a\u307e\u3059\u3002\u6b21\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001\u3088\u308a\u8907\u96d1\u306a\u6587\u5b57\u5217\u9023\u7d50\u306e\u30c6\u30af\u30cb\u30c3\u30af\u306b\u3064\u3044\u3066\u6398\u308a\u4e0b\u3052\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n\n \u57fa\u672c\u7684\u306a\u9023\u7d50\u65b9\u6cd5\u3092\u7406\u89e3\u3057\u305f\u3068\u3053\u308d\u3067\u3001\u3088\u308a\u9ad8\u5ea6\u3067\u30d1\u30ef\u30d5\u30eb\u306a\u6587\u5b57\u5217\u9023\u7d50\u306e\u30c6\u30af\u30cb\u30c3\u30af\u3092\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002\u3053\u308c\u3089\u306e\u65b9\u6cd5\u306f\u3001\u7279\u5b9a\u306e\u30b7\u30ca\u30ea\u30aa\u3067\u30b3\u30fc\u30c9\u3092\u7c21\u6f54\u306b\u3057\u3001\u3088\u308a\u52b9\u7387\u7684\u306b\u6587\u5b57\u5217\u3092\u64cd\u4f5c\u3059\u308b\u306e\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002<\/p>\n\n\n\n \u57fa\u672c\u7684\u306a\u69cb\u6587\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\uff1a<\/p>\n\n\n\n \u4f7f\u7528\u4f8b\uff1a<\/p>\n\n\n\n \u57fa\u672c\u7684\u306a\u69cb\u6587\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\uff1a<\/p>\n\n\n\n \u4e3b\u306a\u66f8\u5f0f\u6307\u5b9a\u5b50\u306b\u306f\u4ee5\u4e0b\u306e\u3082\u306e\u304c\u3042\u308a\u307e\u3059\uff1a<\/p>\n\n\n\n \u4f7f\u7528\u4f8b\uff1a<\/p>\n\n\n\n \u8907\u6570\u884c\u306b\u6e21\u308b\u9577\u3044\u6587\u5b57\u5217\u3092\u6271\u3046\u5834\u5408\u3001PHP\u3067\u306fHeredoc\u3068Nowdoc\u3068\u3044\u30462\u3064\u306e\u69cb\u6587\u304c\u7528\u610f\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u3089\u3092\u4f7f\u3046\u3068\u3001\u8907\u6570\u884c\u306e\u6587\u5b57\u5217\u3092\u8aad\u307f\u3084\u3059\u304f\u8a18\u8ff0\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n Heredoc\u69cb\u6587<\/strong>:<\/p>\n\n\n\n Nowdoc\u69cb\u6587<\/strong>:<\/p>\n\n\n\n \u4f7f\u7528\u4f8b\uff1a<\/p>\n\n\n\n Heredoc\u3068Nowdoc\u306f\u305d\u308c\u305e\u308c\u6b21\u306e\u3088\u3046\u306a\u7279\u5fb4\u304c\u3042\u308a\u307e\u3059\uff1a<\/p>\n\n\n\n Heredoc<\/strong>:<\/p>\n\n\n\n Nowdoc<\/strong>:<\/p>\n\n\n\n PHP 7.3\u4ee5\u964d\u3067\u306f\u3001Heredoc\/Nowdoc\u306e\u7d42\u4e86\u8b58\u5225\u5b50\u3092\u30a4\u30f3\u30c7\u30f3\u30c8\u3057\u3066\u8a18\u8ff0\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3057\u305f\uff1a<\/p>\n\n\n\n \u3053\u308c\u3089\u306e\u9ad8\u5ea6\u306a\u30c6\u30af\u30cb\u30c3\u30af\u3092\u4f7f\u3044\u3053\u306a\u3059\u3053\u3068\u3067\u3001\u3088\u308a\u8aad\u307f\u3084\u3059\u304f\u4fdd\u5b88\u3057\u3084\u3059\u3044\u30b3\u30fc\u30c9\u3092\u66f8\u304f\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u7279\u306b\u8907\u96d1\u306a\u6587\u5b57\u5217\u9023\u7d50\u3084\u7279\u5b9a\u306e\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u304c\u5fc5\u8981\u306a\u5834\u5408\u306b\u306f\u3001\u3053\u308c\u3089\u306e\u65b9\u6cd5\u304c\u975e\u5e38\u306b\u6709\u52b9\u3067\u3059\u3002\u72b6\u6cc1\u306b\u5fdc\u3058\u3066\u6700\u9069\u306a\u624b\u6cd5\u3092\u9078\u629e\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002<\/p>\n\n\n\n \u5c0f\u898f\u6a21\u306aWeb\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3067\u306f\u6587\u5b57\u5217\u9023\u7d50\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306f\u307b\u3068\u3093\u3069\u554f\u984c\u306b\u306a\u308a\u307e\u305b\u3093\u304c\u3001\u5927\u91cf\u306e\u30c7\u30fc\u30bf\u3092\u51e6\u7406\u3059\u308b\u5834\u5408\u3084\u9ad8\u8ca0\u8377\u306a\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3067\u306f\u3001\u6587\u5b57\u5217\u9023\u7d50\u306e\u65b9\u6cd5\u306b\u3088\u3063\u3066\u5927\u304d\u306a\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u5dee\u304c\u751f\u3058\u307e\u3059\u3002\u3053\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u8003\u616e\u3057\u305f\u6587\u5b57\u5217\u9023\u7d50\u306e\u624b\u6cd5\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n\n\n\n PHP\u3067\u306f\u6587\u5b57\u5217\u9023\u7d50\u3092\u884c\u3046\u305f\u3073\u306b\u65b0\u3057\u3044\u30e1\u30e2\u30ea\u9818\u57df\u304c\u5272\u308a\u5f53\u3066\u3089\u308c\u307e\u3059\u3002\u7279\u306b\u5927\u91cf\u306e\u9023\u7d50\u51e6\u7406\u3092\u884c\u3046\u5834\u5408\u3001\u3053\u306e\u52d5\u4f5c\u304c\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u3068\u51e6\u7406\u901f\u5ea6\u306b\u5927\u304d\u306a\u5f71\u97ff\u3092\u4e0e\u3048\u307e\u3059\u3002<\/p>\n\n\n\n \u307e\u305a\u3001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u89b3\u70b9\u304b\u3089\u898b\u305f\u4e00\u822c\u7684\u306a\u9023\u7d50\u65b9\u6cd5\u306e\u6bd4\u8f03\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\uff1a<\/p>\n\n\n\n \u3053\u308c\u3089\u306e\u65b9\u6cd5\u306e\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u3068\u51e6\u7406\u6642\u9593\u3092\u6e2c\u5b9a\u3057\u3066\u307f\u307e\u3057\u3087\u3046\uff1a<\/p>\n\n\n\n \u3053\u306e\u6e2c\u5b9a\u304b\u3089\u3001\u5178\u578b\u7684\u306b\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u7d50\u679c\u304c\u5f97\u3089\u308c\u307e\u3059\uff1a<\/p>\n\n\n \u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u3092\u6700\u9069\u5316\u3059\u308b\u305f\u3081\u306e\u30dd\u30a4\u30f3\u30c8\uff1a<\/p>\n\n\n\n \u5927\u91cf\u306e\u6587\u5b57\u5217\u9023\u7d50\u304c\u5fc5\u8981\u306a\u5834\u5408\u3001PHP\u306eOutput Buffering\u6a5f\u80fd\u3092\u5229\u7528\u3057\u305f\u300c\u6587\u5b57\u5217\u30d0\u30c3\u30d5\u30a1\u300d\u30a2\u30d7\u30ed\u30fc\u30c1\u304c\u52b9\u679c\u7684\u3067\u3059\u3002\u3053\u308c\u306f\u7279\u306b\u52d5\u7684\u306aHTML\u3084\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u751f\u6210\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002<\/p>\n\n\n\n Output Buffering\u306e\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9\uff1a<\/p>\n\n\n\n \u3053\u306e\u30a2\u30d7\u30ed\u30fc\u30c1\u306e\u5229\u70b9\uff1a<\/p>\n\n\n\n \u7279\u306b\u5927\u898f\u6a21\u306aHTML\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u306e\u751f\u6210\u3084\u8907\u96d1\u306a\u30ec\u30dd\u30fc\u30c8\u51fa\u529b\u306a\u3069\u306b\u6709\u52b9\u3067\u3059\uff1a<\/p>\n\n\n\n \u30d0\u30c3\u30d5\u30a1\u30ea\u30f3\u30b0\u306fHTML\u4ee5\u5916\u306b\u3082\u3001CSV\u3084XML\u3001JSON\u306a\u3069\u69d8\u3005\u306a\u5f62\u5f0f\u306e\u51fa\u529b\u751f\u6210\u306b\u6d3b\u7528\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n PHP 8.0\u4ee5\u964d\u3067\u306f\u3001\u6587\u5b57\u5217\u51e6\u7406\u306b\u95a2\u3059\u308b\u591a\u304f\u306e\u6539\u5584\u304c\u884c\u308f\u308c\u3066\u3044\u307e\u3059\u3002\u7279\u306b\u6ce8\u76ee\u3059\u3079\u304d\u70b9\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\uff1a<\/p>\n\n\n\n\n
\nWarning<\/b>: Undefined array key \"is_admin\" in \/home\/xs392991\/dexall.co.jp\/public_html\/articles\/wp-content\/themes\/sango-theme\/library\/gutenberg\/dist\/classes\/Toc.php<\/b> on line 116<\/b>
\n
\nWarning<\/b>: Undefined array key \"is_category_top\" in \/home\/xs392991\/dexall.co.jp\/public_html\/articles\/wp-content\/themes\/sango-theme\/library\/gutenberg\/dist\/classes\/Toc.php<\/b> on line 121<\/b>
\n
\nWarning<\/b>: Undefined array key \"is_top\" in \/home\/xs392991\/dexall.co.jp\/public_html\/articles\/wp-content\/themes\/sango-theme\/library\/gutenberg\/dist\/classes\/Toc.php<\/b> on line 128<\/b>
\n
PHP\u306b\u304a\u3051\u308b\u6587\u5b57\u5217\u9023\u7d50\u306e\u57fa\u790e\u77e5\u8b58<\/h2>\n\n\n\n
PHP\u306e\u6587\u5b57\u5217\u3068\u306f\u4f55\u304b \u2013 \u57fa\u672c\u7684\u306a\u7279\u6027\u3068\u6271\u3044\u65b9<\/h3>\n\n\n\n
\/\/ \u30b7\u30f3\u30b0\u30eb\u30af\u30a9\u30fc\u30c8\uff08\u5358\u4e00\u5f15\u7528\u7b26\uff09\u3092\u4f7f\u3063\u305f\u6587\u5b57\u5217\n$single_quoted = '\u3053\u3093\u306b\u3061\u306f\u3001\u4e16\u754c!';\n\n\/\/ \u30c0\u30d6\u30eb\u30af\u30a9\u30fc\u30c8\uff08\u4e8c\u91cd\u5f15\u7528\u7b26\uff09\u3092\u4f7f\u3063\u305f\u6587\u5b57\u5217\n$double_quoted = \"\u3053\u3093\u306b\u3061\u306f\u3001\u4e16\u754c!\";\n<\/pre>\n\n\n\n
\\n<\/code>\u306a\u3069\uff09\u304c\u51e6\u7406\u3055\u308c\u307e\u3059\u304c\u3001\u30b7\u30f3\u30b0\u30eb\u30af\u30a9\u30fc\u30c8\u5185\u3067\u306f\u307b\u307c\u5168\u3066\u306e\u6587\u5b57\u304c\u305d\u306e\u307e\u307e\u89e3\u91c8\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n$name = \"PHP\";\necho 'Hello, $name!'; \/\/ \u51fa\u529b: Hello, $name!\necho \"Hello, $name!\"; \/\/ \u51fa\u529b: Hello, PHP!\n\necho 'New\\nLine'; \/\/ \u51fa\u529b: New\\nLine\necho \"New\\nLine\"; \/\/ \u51fa\u529b: New\uff08\u6539\u884c\uff09Line\n<\/pre>\n\n\n\n
$str = \"Hello\";\necho $str[0]; \/\/ \u51fa\u529b: H\necho $str[1]; \/\/ \u51fa\u529b: e\n<\/pre>\n\n\n\n
mb_*<\/code>\u95a2\u6570\u3092\u4f7f\u7528\u3059\u308b\u3079\u304d\u3067\u3059\u3002<\/p>\n\n\n\n$str = \"\u3053\u3093\u306b\u3061\u306f\";\necho strlen($str); \/\/ \u51fa\u529b: 15 (\u30d0\u30a4\u30c8\u6570)\necho mb_strlen($str); \/\/ \u51fa\u529b: 5 (\u6587\u5b57\u6570)\n<\/pre>\n\n\n\n
\u306a\u305c\u6587\u5b57\u5217\u9023\u7d50\u65b9\u6cd5\u306e\u9078\u629e\u304c\u91cd\u8981\u306a\u306e\u304b<\/h3>\n\n\n\n
\n
\/\/ \u65b9\u6cd51: \u30c9\u30c3\u30c8\u6f14\u7b97\u5b50\u306e\u7e70\u308a\u8fd4\u3057\u4f7f\u7528\n$result = '';\nfor ($i = 0; $i < 10000; $i++) {\n $result = $result . \"\u6587\u5b57\u5217\" . $i;\n}\n\n\/\/ \u65b9\u6cd52: \u9023\u7d50\u4ee3\u5165\u6f14\u7b97\u5b50\u306e\u4f7f\u7528\n$result = '';\nfor ($i = 0; $i < 10000; $i++) {\n $result .= \"\u6587\u5b57\u5217\" . $i;\n}\n\n\/\/ \u65b9\u6cd53: \u914d\u5217\u3092\u4f5c\u6210\u3057\u6700\u5f8c\u306bimplode\n$parts = [];\nfor ($i = 0; $i < 10000; $i++) {\n $parts[] = \"\u6587\u5b57\u5217\" . $i;\n}\n$result = implode('', $parts);\n<\/pre>\n\n\n\n\u6587\u5b57\u5217\u9023\u7d50\u3068\u578b\u5909\u63db\u306e\u95a2\u4fc2\u6027\u306b\u3064\u3044\u3066<\/h3>\n\n\n\n
.<\/code>\uff08\u30c9\u30c3\u30c8\uff09\u6f14\u7b97\u5b50\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u30aa\u30da\u30e9\u30f3\u30c9\u306f\u6587\u5b57\u5217\u306b\u5909\u63db\u3055\u308c\u307e\u3059\uff1a<\/p>\n\n\n\n$num = 42;\n$str = \"The answer is \" . $num; \/\/ \u6570\u5024\u304c\u6587\u5b57\u5217\u306b\u5909\u63db\u3055\u308c\u308b\necho $str; \/\/ \u51fa\u529b: The answer is 42\n<\/pre>\n\n\n\n
\/\/ \u6570\u5024\u3068\u306e\u9023\u7d50\necho \"\u4fa1\u683c: \" . 1000 . \"\u5186\"; \/\/ \u51fa\u529b: \u4fa1\u683c: 1000\u5186\n\n\/\/ \u771f\u507d\u5024\u3068\u306e\u9023\u7d50\necho \"\u7d50\u679c: \" . true; \/\/ \u51fa\u529b: \u7d50\u679c: 1\necho \"\u7d50\u679c: \" . false; \/\/ \u51fa\u529b: \u7d50\u679c: (\u7a7a\u6587\u5b57\u5217\u306b\u306a\u308b)\n\n\/\/ \u914d\u5217\u3068\u306e\u9023\u7d50 - \u8b66\u544a\u304c\u767a\u751f\n$arr = [1, 2, 3];\necho \"\u914d\u5217: \" . $arr; \/\/ Warning: Array to string conversion\n \/\/ \u51fa\u529b: \u914d\u5217: Array\n\n\/\/ null\u3068\u306e\u9023\u7d50\necho \"Null\u5024: \" . null; \/\/ \u51fa\u529b: Null\u5024: (\u7a7a\u6587\u5b57\u5217\u306b\u306a\u308b)\n<\/pre>\n\n\n\n
.<\/code>)\u3068\u52a0\u7b97\u6f14\u7b97\u5b50(+<\/code>)\u306e\u9055\u3044\u3082\u91cd\u8981\u3067\u3059\uff1a<\/p>\n\n\n\necho \"1\" + \"2\"; \/\/ \u51fa\u529b: 3 (\u6570\u5024\u3068\u3057\u3066\u89e3\u91c8)\necho \"1\" . \"2\"; \/\/ \u51fa\u529b: 12 (\u6587\u5b57\u5217\u3068\u3057\u3066\u9023\u7d50)\n<\/pre>\n\n\n\n
PHP\u3067\u306e\u6587\u5b57\u5217\u9023\u7d50\u306e\u57fa\u672c\u7684\u306a\u65b9\u6cd5<\/h2>\n\n\n\n
\u30c9\u30c3\u30c8\u6f14\u7b97\u5b50\uff08.\uff09\u3092\u4f7f\u3063\u305f\u6587\u5b57\u5217\u9023\u7d50\u306e\u57fa\u672c<\/h3>\n\n\n\n
\/\/ \u57fa\u672c\u7684\u306a\u6587\u5b57\u5217\u306e\u9023\u7d50\n$greeting = \"\u3053\u3093\u306b\u3061\u306f\";\n$name = \"PHP\";\n$message = $greeting . \", \" . $name . \"!\";\necho $message; \/\/ \u51fa\u529b: \u3053\u3093\u306b\u3061\u306f, PHP!\n\n\/\/ \u6570\u5024\u3068\u6587\u5b57\u5217\u306e\u9023\u7d50\n$age = 30;\n$info = \"\u5e74\u9f62: \" . $age . \"\u6b73\";\necho $info; \/\/ \u51fa\u529b: \u5e74\u9f62: 30\u6b73\n\n\/\/ \u8907\u6570\u306e\u5024\u3092\u9023\u7d50\n$first = \"PHP\";\n$second = \"\u306f\";\n$third = \"\u7d20\u6674\u3089\u3057\u3044\";\n$result = $first . $second . $third;\necho $result; \/\/ \u51fa\u529b: PHP\u306f\u7d20\u6674\u3089\u3057\u3044\n<\/pre>\n\n\n\n
\/\/ \u6f14\u7b97\u5b50\u306e\u512a\u5148\u9806\u4f4d\u306e\u4f8b\necho \"\u5408\u8a08: \" . 10 + 5; \/\/ \u51fa\u529b: 15 \u3067\u306f\u306a\u304f \"\u5408\u8a08: 10\" + 5 = 15\necho \"\u5408\u8a08: \" . (10 + 5); \/\/ \u51fa\u529b: \u5408\u8a08: 15\n<\/pre>\n\n\n\n
.<\/code>\u6f14\u7b97\u5b50\u3088\u308a+<\/code>\u6f14\u7b97\u5b50\u306e\u65b9\u304c\u512a\u5148\u9806\u4f4d\u304c\u9ad8\u3044\u305f\u3081\u3001\u4e88\u671f\u3057\u306a\u3044\u7d50\u679c\u306b\u306a\u308a\u307e\u3059\u3002\u3053\u306e\u3088\u3046\u306a\u5834\u5408\u306f\u3001\u62ec\u5f27\u3092\u4f7f\u3063\u3066\u660e\u793a\u7684\u306b\u6f14\u7b97\u306e\u9806\u5e8f\u3092\u6307\u5b9a\u3059\u308b\u3068\u3088\u3044\u3067\u3057\u3087\u3046\u3002<\/p>\n\n\n\n\u9023\u7d50\u4ee3\u5165\u6f14\u7b97\u5b50\uff08.=\uff09\u306e\u52b9\u7387\u7684\u306a\u4f7f\u3044\u65b9<\/h3>\n\n\n\n
\/\/ \u9023\u7d50\u4ee3\u5165\u6f14\u7b97\u5b50\u306e\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9\n$text = \"Hello\";\n$text .= \" \"; \/\/ $text = $text . \" \" \u3068\u540c\u3058\n$text .= \"World\";\necho $text; \/\/ \u51fa\u529b: Hello World\n\n\/\/ \u30eb\u30fc\u30d7\u5185\u3067\u306e\u6587\u5b57\u5217\u69cb\u7bc9\n$numbers = \"\";\nfor ($i = 1; $i <= 5; $i++) {\n $numbers .= $i;\n if ($i < 5) {\n $numbers .= \", \";\n }\n}\necho $numbers; \/\/ \u51fa\u529b: 1, 2, 3, 4, 5\n\n\/\/ HTML\u306e\u69cb\u7bc9\u4f8b\n$html = \"<ul>\\n\";\n$items = [\"\u308a\u3093\u3054\", \"\u30d0\u30ca\u30ca\", \"\u30aa\u30ec\u30f3\u30b8\"];\nforeach ($items as $item) {\n $html .= \" <li>\" . $item . \"<\/li>\\n\";\n}\n$html .= \"<\/ul>\";\necho $html;\n\/* \u51fa\u529b:\n<ul>\n <li>\u308a\u3093\u3054<\/li>\n <li>\u30d0\u30ca\u30ca<\/li>\n <li>\u30aa\u30ec\u30f3\u30b8<\/li>\n<\/ul>\n*\/\n<\/pre>\n\n\n\n\u30c0\u30d6\u30eb\u30af\u30a9\u30fc\u30c6\u30fc\u30b7\u30e7\u30f3\u5185\u3067\u306e\u5909\u6570\u5c55\u958b\u30c6\u30af\u30cb\u30c3\u30af<\/h3>\n\n\n\n
\/\/ \u57fa\u672c\u7684\u306a\u5909\u6570\u5c55\u958b\n$name = \"PHP\";\necho \"Hello, $name!\"; \/\/ \u51fa\u529b: Hello, PHP!\n\n\/\/ \u5909\u6570\u5c55\u958b\u3068\u6587\u5b57\u5217\u306e\u7d50\u5408\n$language = \"PHP\";\n$version = 8.1;\necho \"$language $version is powerful!\"; \/\/ \u51fa\u529b: PHP 8.1 is powerful!\n\n\/\/ \u8907\u96d1\u306a\u5909\u6570\u5c55\u958b\u306b\u306f\u6ce2\u62ec\u5f27\u3092\u4f7f\u7528\n$user = [\"name\" => \"\u7530\u4e2d\", \"age\" => 30];\necho \"\u30e6\u30fc\u30b6\u30fc: {$user['name']}\u3001{$user['age']}\u6b73\"; \/\/ \u51fa\u529b: \u30e6\u30fc\u30b6\u30fc: \u7530\u4e2d\u300130\u6b73\n\n\/\/ \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u30d7\u30ed\u30d1\u30c6\u30a3\u306e\u5c55\u958b\n$person = new stdClass();\n$person->name = \"\u4f50\u85e4\";\n$person->job = \"\u30a8\u30f3\u30b8\u30cb\u30a2\";\necho \"{$person->name}\u3055\u3093\u306f{$person->job}\u3067\u3059\"; \/\/ \u51fa\u529b: \u4f50\u85e4\u3055\u3093\u306f\u30a8\u30f3\u30b8\u30cb\u30a2\u3067\u3059\n\n\/\/ \u8907\u96d1\u306a\u5f0f\u306e\u5c55\u958b\n$a = 5;\n$b = 3;\necho \"\u8a08\u7b97\u7d50\u679c: {$a * $b}\"; \/\/ \u51fa\u529b: \u8a08\u7b97\u7d50\u679c: 15\n<\/pre>\n\n\n\n{}<\/code> \u3067\u56f2\u3080\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n\/\/ \u5909\u6570\u540d\u3068\u4ed6\u306e\u6587\u5b57\u304c\u9023\u7d9a\u3059\u308b\u5834\u5408\n$name = \"PHP\";\necho \"$name\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\"; \/\/ \u5909\u6570$name\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u3092\u63a2\u305d\u3046\u3068\u3057\u3066\u30a8\u30e9\u30fc\necho \"{$name}\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\"; \/\/ \u6b63\u3057\u3044\u51fa\u529b: PHP\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\n\n\/\/ \u7279\u6b8a\u6587\u5b57\uff08\u30a8\u30b9\u30b1\u30fc\u30d7\u30b7\u30fc\u30b1\u30f3\u30b9\uff09\necho \"\u6539\u884c\u304c\\n\u5fc5\u8981\u306a\u5834\u5408\";\n\/*\n\u51fa\u529b:\n\u6539\u884c\u304c\n\u5fc5\u8981\u306a\u5834\u5408\n*\/\n\n\/\/ \u30c0\u30d6\u30eb\u30af\u30a9\u30fc\u30c8\u306e\u30a8\u30b9\u30b1\u30fc\u30d7\necho \"\u5f7c\u306f\\\"\u30d7\u30ed\u30b0\u30e9\u30de\u30fc\\\"\u3067\u3059\"; \/\/ \u51fa\u529b: \u5f7c\u306f\"\u30d7\u30ed\u30b0\u30e9\u30de\u30fc\"\u3067\u3059\n<\/pre>\n\n\n\n\u8907\u96d1\u306a\u6587\u5b57\u5217\u3092\u9023\u7d50\u3059\u308b\u9ad8\u5ea6\u306a\u30c6\u30af\u30cb\u30c3\u30af<\/h2>\n\n\n\n
\u914d\u5217\u304b\u3089\u6587\u5b57\u5217\u3092\u751f\u6210\u3059\u308bimplode()\u95a2\u6570\u306e\u6d3b\u7528\u6cd5<\/h3>\n\n\n\n
implode()<\/code>\u95a2\u6570\u306f\u3001\u914d\u5217\u306e\u8981\u7d20\u3092\u6307\u5b9a\u3055\u308c\u305f\u533a\u5207\u308a\u6587\u5b57\u3067\u9023\u7d50\u3057\u3066\u4e00\u3064\u306e\u6587\u5b57\u5217\u306b\u3059\u308b\u5f37\u529b\u306a\u95a2\u6570\u3067\u3059\u3002\u5927\u91cf\u306e\u8981\u7d20\u3092\u9023\u7d50\u3059\u308b\u5834\u5408\u3001\u30c9\u30c3\u30c8\u6f14\u7b97\u5b50\u3092\u7e70\u308a\u8fd4\u3057\u4f7f\u3046\u3088\u308a\u3082\u52b9\u7387\u7684\u3067\u30b3\u30fc\u30c9\u3082\u7c21\u6f54\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\nstring implode(string $separator, array $array)\n\/\/ \u307e\u305f\u306f\nstring implode(array $array) \/\/ \u533a\u5207\u308a\u6587\u5b57\u306a\u3057\uff08\u7a7a\u6587\u5b57\u5217\uff09\u3067\u9023\u7d50\n<\/pre>\n\n\n\n
\/\/ \u57fa\u672c\u7684\u306a\u4f7f\u7528\u6cd5\n$fruits = ['\u308a\u3093\u3054', '\u30d0\u30ca\u30ca', '\u30aa\u30ec\u30f3\u30b8'];\n$fruitList = implode(', ', $fruits);\necho $fruitList; \/\/ \u51fa\u529b: \u308a\u3093\u3054, \u30d0\u30ca\u30ca, \u30aa\u30ec\u30f3\u30b8\n\n\/\/ \u533a\u5207\u308a\u6587\u5b57\u306a\u3057\u3067\u306e\u9023\u7d50\n$characters = ['H', 'e', 'l', 'l', 'o'];\n$word = implode('', $characters);\necho $word; \/\/ \u51fa\u529b: Hello\n\n\/\/ \u6570\u5024\u914d\u5217\u306e\u9023\u7d50\n$numbers = [1, 2, 3, 4, 5];\n$result = implode('-', $numbers);\necho $result; \/\/ \u51fa\u529b: 1-2-3-4-5\n\n\/\/ join()\u306f implode()\u306e\u30a8\u30a4\u30ea\u30a2\u30b9\n$tags = ['PHP', '\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0', 'Web\u958b\u767a'];\n$tagString = join(' | ', $tags);\necho $tagString; \/\/ \u51fa\u529b: PHP | \u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0 | Web\u958b\u767a\n<\/pre>\n\n\n\nimplode()<\/code>\u306f\u7279\u306b\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u30b7\u30ca\u30ea\u30aa\u3067\u5a01\u529b\u3092\u767a\u63ee\u3057\u307e\u3059\uff1a<\/p>\n\n\n\n\n
$items = ['\u9805\u76ee1', '\u9805\u76ee2', '\u9805\u76ee3'];\n$listItems = array_map(function($item) {\n return \"<li>{$item}<\/li>\";\n}, $items);\n$html = \"<ul>\" . implode(\"\\n\", $listItems) . \"<\/ul>\";\necho $html;\n\/*\n\u51fa\u529b:\n<ul>\n<li>\u9805\u76ee1<\/li>\n<li>\u9805\u76ee2<\/li>\n<li>\u9805\u76ee3<\/li>\n<\/ul>\n*\/\n<\/pre>\n\n\n\n\n
$userData = [\n ['id' => 1, 'name' => '\u7530\u4e2d', 'email' => 'tanaka@example.com'],\n ['id' => 2, 'name' => '\u4f50\u85e4', 'email' => 'sato@example.com']\n];\n\n$csvRows = [];\nforeach ($userData as $user) {\n $csvRows[] = implode(',', $user);\n}\n$csv = implode(\"\\n\", $csvRows);\necho $csv;\n\/*\n\u51fa\u529b:\n1,\u7530\u4e2d,tanaka@example.com\n2,\u4f50\u85e4,sato@example.com\n*\/\n<\/pre>\n\n\n\n\n
$ids = [1, 5, 9, 12];\n$placeholder = implode(',', array_fill(0, count($ids), '?'));\n$sql = \"SELECT * FROM users WHERE id IN ($placeholder)\";\necho $sql; \/\/ \u51fa\u529b: SELECT * FROM users WHERE id IN (?,?,?,?)\n<\/pre>\n\n\n\nimplode()<\/code>\u3068\u5bfe\u306b\u306a\u308b\u95a2\u6570\u304cexplode()<\/code>\u3067\u3059\u3002\u3053\u306e\u7d44\u307f\u5408\u308f\u305b\u306f\u30c7\u30fc\u30bf\u306e\u5909\u63db\u306b\u975e\u5e38\u306b\u4fbf\u5229\u3067\u3059\uff1a<\/p>\n\n\n\n\/\/ \u6587\u5b57\u5217\u304b\u3089\u914d\u5217\u3078\u306e\u5909\u63db\u3068\u518d\u5ea6\u6587\u5b57\u5217\u5316\n$data = \"apple,banana,orange\";\n$array = explode(',', $data); \/\/ ['apple', 'banana', 'orange']\n$newData = implode(' | ', $array); \/\/ \"apple | banana | orange\"\necho $newData;\n<\/pre>\n\n\n\nsprintf()\u3092\u4f7f\u3063\u305f\u66f8\u5f0f\u4ed8\u304d\u6587\u5b57\u5217\u306e\u9023\u7d50\u65b9\u6cd5<\/h3>\n\n\n\n
sprintf()<\/code>\u95a2\u6570\u306f\u3001\u66f8\u5f0f\u6307\u5b9a\u3055\u308c\u305f\u6587\u5b57\u5217\u3092\u751f\u6210\u3059\u308b\u305f\u3081\u306e\u5f37\u529b\u306a\u95a2\u6570\u3067\u3059\u3002\u7279\u306b\u8907\u96d1\u306a\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3092\u6301\u3064\u6587\u5b57\u5217\u3084\u3001\u6570\u5024\u3092\u7279\u5b9a\u306e\u5f62\u5f0f\u3067\u6587\u5b57\u5217\u306b\u5909\u63db\u3059\u308b\u5834\u5408\u306b\u4fbf\u5229\u3067\u3059\u3002<\/p>\n\n\n\nstring sprintf(string $format, mixed ...$values)\n<\/pre>\n\n\n\n
\n
%s<\/code> \u2013 \u6587\u5b57\u5217<\/li>\n\n\n\n%d<\/code> \u2013 \u6574\u6570\uff0810\u9032\u6570\uff09<\/li>\n\n\n\n%f<\/code> \u2013 \u6d6e\u52d5\u5c0f\u6570\u70b9\u6570<\/li>\n\n\n\n%b<\/code> \u2013 2\u9032\u6570<\/li>\n\n\n\n%o<\/code> \u2013 8\u9032\u6570<\/li>\n\n\n\n%x<\/code> \u2013 16\u9032\u6570\uff08\u5c0f\u6587\u5b57\uff09<\/li>\n\n\n\n%X<\/code> \u2013 16\u9032\u6570\uff08\u5927\u6587\u5b57\uff09<\/li>\n\n\n\n%%<\/code> \u2013 \u30d1\u30fc\u30bb\u30f3\u30c8\u8a18\u53f7\u3092\u51fa\u529b<\/li>\n<\/ul>\n\n\n\n\/\/ \u57fa\u672c\u7684\u306a\u4f7f\u7528\u6cd5\n$name = \"PHP\";\n$version = 8.1;\n$formatted = sprintf(\"\u8a00\u8a9e: %s\u3001\u30d0\u30fc\u30b8\u30e7\u30f3: %.1f\", $name, $version);\necho $formatted; \/\/ \u51fa\u529b: \u8a00\u8a9e: PHP\u3001\u30d0\u30fc\u30b8\u30e7\u30f3: 8.1\n\n\/\/ \u6841\u6570\u306e\u6307\u5b9a\n$id = 42;\n$paddedId = sprintf(\"ID: %05d\", $id);\necho $paddedId; \/\/ \u51fa\u529b: ID: 00042\n\n\/\/ \u65e5\u4ed8\u306e\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\n$year = 2023;\n$month = 5;\n$day = 9;\n$date = sprintf(\"%04d-%02d-%02d\", $year, $month, $day);\necho $date; \/\/ \u51fa\u529b: 2023-05-09\n\n\/\/ \u8907\u6570\u306e\u7f6e\u63db\n$product = \"\u30ce\u30fc\u30c8PC\";\n$price = 89800;\n$tax = $price * 0.1;\n$message = sprintf(\n \"\u5546\u54c1\u300c%s\u300d\u306e\u4fa1\u683c\u306f%s\u5186\uff08\u7a0e\u8fbc%s\u5186\uff09\u3067\u3059\u3002\",\n $product,\n number_format($price),\n number_format($price + $tax)\n);\necho $message; \/\/ \u51fa\u529b: \u5546\u54c1\u300c\u30ce\u30fc\u30c8PC\u300d\u306e\u4fa1\u683c\u306f89,800\u5186\uff08\u7a0e\u8fbc98,780\u5186\uff09\u3067\u3059\u3002\n\n\/\/ \u4f4d\u7f6e\u6307\u5b9a\u5b50\u306e\u4f7f\u7528\n$formatted = sprintf(\n '%2$s\u3001%1$s\u3001%3$s\uff01',\n 'world',\n 'Hello',\n 'welcome'\n);\necho $formatted; \/\/ \u51fa\u529b: Hello\u3001world\u3001welcome\uff01\n<\/pre>\n\n\n\n
sprintf()<\/code>\u306f\u7279\u306b\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u5834\u9762\u3067\u5f79\u7acb\u3061\u307e\u3059\uff1a<\/p>\n\n\n\n\n
$data = [\n ['name' => '\u7530\u4e2d', 'score' => 85.5],\n ['name' => '\u4f50\u85e4', 'score' => 92.0]\n];\n\nforeach ($data as $item) {\n echo sprintf(\"%-10s: %6.1f\u70b9\\n\", $item['name'], $item['score']);\n}\n\/*\n\u51fa\u529b:\n\u7530\u4e2d : 85.5\u70b9\n\u4f50\u85e4 : 92.0\u70b9\n*\/\n<\/pre>\n\n\n\n\n
$protocol = 'https';\n$domain = 'example.com';\n$path = 'search';\n$params = ['q' => 'PHP', 'lang' => 'ja'];\n\n$queryString = http_build_query($params);\n$url = sprintf('%s:\/\/%s\/%s?%s', $protocol, $domain, $path, $queryString);\necho $url; \/\/ \u51fa\u529b: https:\/\/example.com\/search?q=PHP&lang=ja\n<\/pre>\n\n\n\nHeredoc\u3068nowdoc\u3092\u4f7f\u3063\u305f\u8907\u6570\u884c\u6587\u5b57\u5217\u306e\u9023\u7d50<\/h3>\n\n\n\n
$variable = \"\u5909\u6570\";\n$string = <<<EOT\n\u3053\u308c\u306f\u8907\u6570\u884c\u306e\u6587\u5b57\u5217\u3067\u3059\u3002\n\u6539\u884c\u3082\u305d\u306e\u307e\u307e\u4fdd\u6301\u3055\u308c\u307e\u3059\u3002\n\u5909\u6570\u3082\u5c55\u958b\u3055\u308c\u307e\u3059: $variable\nEOT;\n<\/pre>\n\n\n\n
$string = <<<'EOD'\n\u3053\u308c\u3082\u8907\u6570\u884c\u306e\u6587\u5b57\u5217\u3067\u3059\u304c\u3001\n\u5909\u6570\u306f\u5c55\u958b\u3055\u308c\u307e\u305b\u3093: $variable\n\u305d\u306e\u307e\u307e\u8868\u793a\u3055\u308c\u307e\u3059\u3002\nEOD;\n<\/pre>\n\n\n\n
\/\/ Heredoc\u306e\u57fa\u672c\u4f8b\n$name = \"PHP\";\n$version = 8.1;\n$description = <<<EOT\n\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u8a00\u8a9e\u300c{$name}\u300d\u306e\u7d39\u4ecb\n=====================\n\u30d0\u30fc\u30b8\u30e7\u30f3: $version\n\u7279\u5fb4:\n- Web\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u958b\u767a\u306b\u6700\u9069\n- \u30aa\u30fc\u30d7\u30f3\u30bd\u30fc\u30b9\n- \u5e83\u7bc4\u306a\u30b3\u30df\u30e5\u30cb\u30c6\u30a3\u30b5\u30dd\u30fc\u30c8\nEOT;\n\necho $description;\n\/*\n\u51fa\u529b:\n\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u8a00\u8a9e\u300cPHP\u300d\u306e\u7d39\u4ecb\n=====================\n\u30d0\u30fc\u30b8\u30e7\u30f3: 8.1\n\u7279\u5fb4:\n- Web\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u958b\u767a\u306b\u6700\u9069\n- \u30aa\u30fc\u30d7\u30f3\u30bd\u30fc\u30b9\n- \u5e83\u7bc4\u306a\u30b3\u30df\u30e5\u30cb\u30c6\u30a3\u30b5\u30dd\u30fc\u30c8\n*\/\n\n\/\/ Nowdoc\u306e\u4f8b\n$code = <<<'CODE'\n<?php\n$name = \"PHP\";\necho \"Hello, $name!\";\n\/\/ \u51fa\u529b: Hello, PHP!\n?>\nCODE;\n\necho $code;\n\/*\n\u51fa\u529b:\n<?php\n$name = \"PHP\";\necho \"Hello, $name!\";\n\/\/ \u51fa\u529b: Hello, PHP!\n?>\n*\/\n\n\/\/ HTML\u3068JavaScript\u306e\u57cb\u3081\u8fbc\u307f\n$userId = 12345;\n$htmlCode = <<<HTML\n<!DOCTYPE html>\n<html>\n<head>\n <title>\u30e6\u30fc\u30b6\u30fc\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb<\/title>\n <script>\n \/\/ JavaScript\u30b3\u30fc\u30c9\n function loadUser() {\n const userId = {$userId};\n console.log(`Loading user #${userId}`);\n \/\/ API\u304b\u3089\u30c7\u30fc\u30bf\u3092\u53d6\u5f97\u3059\u308b\u51e6\u7406\n }\n <\/script>\n<\/head>\n<body onload=\"loadUser()\">\n <h1>\u30e6\u30fc\u30b6\u30fc #{$userId}\u306e\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb<\/h1>\n <div id=\"user-data\"><\/div>\n<\/body>\n<\/html>\nHTML;\n\n\/\/ SQL\u30af\u30a8\u30ea\u306e\u69cb\u7bc9\n$tableName = \"users\";\n$conditions = \"status = 'active' AND created_at > '2023-01-01'\";\n$query = <<<SQL\nSELECT \n id,\n username,\n email,\n created_at\nFROM {$tableName}\nWHERE {$conditions}\nORDER BY created_at DESC\nLIMIT 10;\nSQL;\n\necho $query;\n\/*\n\u51fa\u529b:\nSELECT \n id,\n username,\n email,\n created_at\nFROM users\nWHERE status = 'active' AND created_at > '2023-01-01'\nORDER BY created_at DESC\nLIMIT 10;\n*\/\n<\/pre>\n\n\n\n\n
{$var}<\/code> \u306e\u3088\u3046\u306b\u6ce2\u62ec\u5f27\u3067\u56f2\u3080<\/li>\n\n\n\n\n
function getTemplate() {\n return <<<EOT\n <div>\n <h1>\u30bf\u30a4\u30c8\u30eb<\/h1>\n <p>\u6bb5\u843d\u30c6\u30ad\u30b9\u30c8<\/p>\n <\/div>\n EOT;\n}\n<\/pre>\n\n\n\n\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u8003\u616e\u3057\u305f\u6587\u5b57\u5217\u9023\u7d50\u624b\u6cd5<\/h2>\n\n\n\n
\u5927\u91cf\u306e\u6587\u5b57\u5217\u9023\u7d50\u306b\u304a\u3051\u308b\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u306e\u6700\u9069\u5316<\/h3>\n\n\n\n
\/\/ \u65b9\u6cd51: \u30c9\u30c3\u30c8\u6f14\u7b97\u5b50\u3092\u6bce\u56de\u4f7f\u7528\u3059\u308b\uff08\u975e\u52b9\u7387\uff09\n$result = '';\nfor ($i = 0; $i < 10000; $i++) {\n $result = $result . 'a'; \/\/ \u6bce\u56de\u65b0\u3057\u3044\u30e1\u30e2\u30ea\u5272\u308a\u5f53\u3066\u304c\u767a\u751f\n}\n\n\/\/ \u65b9\u6cd52: \u9023\u7d50\u4ee3\u5165\u6f14\u7b97\u5b50\u3092\u4f7f\u7528\u3059\u308b\uff08\u3088\u308a\u52b9\u7387\u7684\uff09\n$result = '';\nfor ($i = 0; $i < 10000; $i++) {\n $result .= 'a'; \/\/ \u65e2\u5b58\u306e\u6587\u5b57\u5217\u306b\u8ffd\u52a0\n}\n\n\/\/ \u65b9\u6cd53: \u914d\u5217\u306b\u8ffd\u52a0\u3057\u3066\u304b\u3089implode\u3059\u308b\uff08\u5927\u91cf\u306e\u30c7\u30fc\u30bf\u306b\u52b9\u7387\u7684\uff09\n$parts = [];\nfor ($i = 0; $i < 10000; $i++) {\n $parts[] = 'a'; \/\/ \u914d\u5217\u306b\u8ffd\u52a0\u3059\u308b\u3060\u3051\n}\n$result = implode('', $parts); \/\/ \u4e00\u5ea6\u3060\u3051\u9023\u7d50\u64cd\u4f5c\n<\/pre>\n\n\n\n\/\/ \u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6e2c\u5b9a\u95a2\u6570\nfunction measurePerformance($callback) {\n $memoryBefore = memory_get_usage();\n $timeBefore = microtime(true);\n \n $result = $callback();\n \n $timeAfter = microtime(true);\n $memoryAfter = memory_get_usage();\n \n return [\n 'memory' => $memoryAfter - $memoryBefore,\n 'time' => $timeAfter - $timeBefore,\n 'result' => $result\n ];\n}\n\n\/\/ \u65b9\u6cd51\u306e\u6e2c\u5b9a\n$method1 = measurePerformance(function() {\n $result = '';\n for ($i = 0; $i < 100000; $i++) {\n $result = $result . 'a';\n }\n return $result;\n});\n\n\/\/ \u65b9\u6cd52\u306e\u6e2c\u5b9a\n$method2 = measurePerformance(function() {\n $result = '';\n for ($i = 0; $i < 100000; $i++) {\n $result .= 'a';\n }\n return $result;\n});\n\n\/\/ \u65b9\u6cd53\u306e\u6e2c\u5b9a\n$method3 = measurePerformance(function() {\n $parts = [];\n for ($i = 0; $i < 100000; $i++) {\n $parts[] = 'a';\n }\n return implode('', $parts);\n});\n\n\/\/ \u7d50\u679c\u306e\u8868\u793a\necho \"\u65b9\u6cd51 (\u30c9\u30c3\u30c8\u6f14\u7b97\u5b50): \u30e1\u30e2\u30ea \" . number_format($method1['memory']) . \" \u30d0\u30a4\u30c8, \u6642\u9593 \" . sprintf('%.4f', $method1['time']) . \" \u79d2\\n\";\necho \"\u65b9\u6cd52 (\u9023\u7d50\u4ee3\u5165\u6f14\u7b97\u5b50): \u30e1\u30e2\u30ea \" . number_format($method2['memory']) . \" \u30d0\u30a4\u30c8, \u6642\u9593 \" . sprintf('%.4f', $method2['time']) . \" \u79d2\\n\";\necho \"\u65b9\u6cd53 (\u914d\u5217+implode): \u30e1\u30e2\u30ea \" . number_format($method3['memory']) . \" \u30d0\u30a4\u30c8, \u6642\u9593 \" . sprintf('%.4f', $method3['time']) . \" \u79d2\\n\";\n<\/pre>\n\n\n\n\u65b9\u6cd5<\/th> \u30e1\u30e2\u30ea\u4f7f\u7528\u91cf<\/th> \u51e6\u7406\u6642\u9593<\/th> \u5099\u8003<\/th><\/tr><\/thead> \u30c9\u30c3\u30c8\u6f14\u7b97\u5b50 (.)<\/td> \u975e\u5e38\u306b\u591a\u3044<\/td> \u975e\u5e38\u306b\u9045\u3044<\/td> \u6bce\u56de\u65b0\u3057\u3044\u6587\u5b57\u5217\u3092\u4f5c\u6210\u3059\u308b\u305f\u3081\u6700\u3082\u975e\u52b9\u7387<\/td><\/tr> \u9023\u7d50\u4ee3\u5165\u6f14\u7b97\u5b50 (.=)<\/td> \u5c11\u306a\u3044<\/td> \u901f\u3044<\/td> \u5c0f\uff5e\u4e2d\u898f\u6a21\u306e\u30c7\u30fc\u30bf\u306b\u6700\u9069<\/td><\/tr> \u914d\u5217+implode<\/td> \u4e2d\u7a0b\u5ea6<\/td> \u6700\u3082\u901f\u3044<\/td> \u5927\u898f\u6a21\u30c7\u30fc\u30bf\u306b\u6700\u9069\u3001\u305f\u3060\u3057\u914d\u5217\u306e\u30aa\u30fc\u30d0\u30fc\u30d8\u30c3\u30c9\u3042\u308a<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n \n
\u6587\u5b57\u5217\u30d0\u30c3\u30d5\u30a1\u3092\u4f7f\u7528\u3057\u305f\u52b9\u7387\u7684\u306a\u9023\u7d50\u51e6\u7406<\/h3>\n\n\n\n
\/\/ \u30d0\u30c3\u30d5\u30a1\u30ea\u30f3\u30b0\u3092\u958b\u59cb\nob_start();\n\n\/\/ \u30d0\u30c3\u30d5\u30a1\u306b\u5185\u5bb9\u3092\u66f8\u304d\u8fbc\u3080\uff08echo\u3084print\u3092\u4f7f\u7528\uff09\necho \"<h1>\u30bf\u30a4\u30c8\u30eb<\/h1>\\n\";\necho \"<p>\u6bb5\u843d1<\/p>\\n\";\nfor ($i = 1; $i <= 5; $i++) {\n echo \"<li>\u9805\u76ee {$i}<\/li>\\n\";\n}\necho \"<p>\u6bb5\u843d2<\/p>\\n\";\n\n\/\/ \u30d0\u30c3\u30d5\u30a1\u304b\u3089\u5185\u5bb9\u3092\u53d6\u5f97\u3057\u3066\u7d42\u4e86\n$html = ob_get_clean(); \/\/ ob_get_contents() + ob_end_clean()\n\n\/\/ \u7d50\u679c\u306e\u4f7f\u7528\necho \"\u751f\u6210\u3055\u308c\u305fHTML\u9577: \" . strlen($html) . \" \u6587\u5b57\";\n<\/pre>\n\n\n\n\n
ob_start()<\/code>\u3092\u8907\u6570\u56de\u547c\u3073\u51fa\u3059\u3053\u3068\u3067\u3001\u30d0\u30c3\u30d5\u30a1\u3092\u30cd\u30b9\u30c8\u3067\u304d\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\nfunction generateReport($data) {\n ob_start();\n \n echo \"<div class=\\\"report\\\">\\n\";\n echo \" <h1>\u6708\u6b21\u30ec\u30dd\u30fc\u30c8: {$data['title']}<\/h1>\\n\";\n echo \" <div class=\\\"summary\\\">\\n\";\n \n \/\/ \u6982\u8981\u30bb\u30af\u30b7\u30e7\u30f3\n foreach ($data['summary'] as $key => $value) {\n echo \" <div class=\\\"item\\\"><span>{$key}:<\/span> {$value}<\/div>\\n\";\n }\n \n echo \" <\/div>\\n\";\n echo \" <table class=\\\"details\\\">\\n\";\n echo \" <tr><th>\u65e5\u4ed8<\/th><th>\u9805\u76ee<\/th><th>\u91d1\u984d<\/th><\/tr>\\n\";\n \n \/\/ \u8a73\u7d30\u30c6\u30fc\u30d6\u30eb\n foreach ($data['details'] as $item) {\n echo \" <tr>\\n\";\n echo \" <td>\" . date('Y-m-d', $item['date']) . \"<\/td>\\n\";\n echo \" <td>{$item['description']}<\/td>\\n\";\n echo \" <td class=\\\"amount\\\">\" . number_format($item['amount']) . \"<\/td>\\n\";\n echo \" <\/tr>\\n\";\n }\n \n echo \" <\/table>\\n\";\n echo \"<\/div>\\n\";\n \n return ob_get_clean();\n}\n<\/pre>\n\n\n\nPHP 8.0\u4ee5\u964d\u3067\u5c0e\u5165\u3055\u308c\u305f\u6587\u5b57\u5217\u95a2\u9023\u306e\u6700\u9069\u5316<\/h3>\n\n\n\n
\n
\/\/ PHP 8.0\u3067\u8ffd\u52a0\u3055\u308c\u305f\u6587\u5b57\u5217\u95a2\u6570
$haystack = \"Hello, World!\";<\/code>\/\/ \u6587\u5b57\u5217\u304c\u542b\u307e\u308c\u3066\u3044\u308b\u304b\u691c\u67fb<\/code>var_dump(str_contains($haystack, \"World\")); \/\/ bool(true)<\/code>\/\/ \u6587\u5b57\u5217\u304c\u7279\u5b9a\u306e\u30d7\u30ec\u30d5\u30a3\u30c3\u30af\u30b9\u3067\u59cb\u307e\u308b\u304b\u691c\u67fb<\/code>var_dump(str_starts_with($haystack, \"Hello\")); \/\/ bool(true)<\/code>\/\/ \u6587\u5b57\u5217\u304c\u7279\u5b9a\u306e\u30b5\u30d5\u30a3\u30c3\u30af\u30b9\u3067\u7d42\u308f\u308b\u304b\u691c\u67fb<\/code>var_dump(str_ends_with($haystack, \"!\")); \/\/ bool(true)<\/code><\/li>\n\n\n\n