{"id":46999,"date":"2024-12-02T17:05:58","date_gmt":"2024-12-02T09:05:58","guid":{"rendered":"https:\/\/fwq.ai\/blog\/46999\/"},"modified":"2024-12-02T17:05:58","modified_gmt":"2024-12-02T09:05:58","slug":"php-%e5%87%bd%e6%95%b0%e4%b8%ad%e5%bc%95%e7%94%a8%e4%bc%a0%e9%80%92%e7%9a%84%e6%80%a7%e8%83%bd%e5%88%86%e6%9e%90%e5%92%8c%e5%9f%ba%e5%87%86%e6%b5%8b%e8%af%95","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/46999\/","title":{"rendered":"PHP \u51fd\u6570\u4e2d\u5f15\u7528\u4f20\u9012\u7684\u6027\u80fd\u5206\u6790\u548c\u57fa\u51c6\u6d4b\u8bd5"},"content":{"rendered":"<p><b><\/b> <\/p>\n<h1>PHP \u51fd\u6570\u4e2d\u5f15\u7528\u4f20\u9012\u7684\u6027\u80fd\u5206\u6790\u548c\u57fa\u51c6\u6d4b\u8bd5<\/h1>\n<p>\u5728\u6587\u7ae0\u5b9e\u6218\u5f00\u53d1\u7684\u8fc7\u7a0b\u4e2d\uff0c\u6211\u4eec\u7ecf\u5e38\u4f1a\u9047\u5230\u4e00\u4e9b\u8fd9\u6837\u90a3\u6837\u7684\u95ee\u9898\uff0c\u7136\u540e\u8981\u5361\u597d\u534a\u5929\uff0c\u7b49\u95ee\u9898\u89e3\u51b3\u4e86\u624d\u53d1\u73b0\u539f\u6765\u4e00\u4e9b\u7ec6\u8282\u77e5\u8bc6\u70b9\u8fd8\u662f\u6ca1\u6709\u638c\u63e1\u597d\u3002\u4eca\u5929\u7c73\u4e91\u5c31\u6574\u7406\u5206\u4eab\u300aPHP \u51fd\u6570\u4e2d\u5f15\u7528\u4f20\u9012\u7684\u6027\u80fd\u5206\u6790\u548c\u57fa\u51c6\u6d4b\u8bd5\u300b\uff0c\u804a\u804a\uff0c\u5e0c\u671b\u53ef\u4ee5\u5e2e\u52a9\u5230\u6b63\u5728\u52aa\u529b\u8d5a\u94b1\u7684\u4f60\u3002<\/p>\n<p>PHP \u4e2d\uff0c\u5f15\u7528\u4f20\u9012\u6bd4\u503c\u4f20\u9012\u6027\u80fd\u66f4\u9ad8\uff0c\u56e0\u4e3a\u5f15\u7528\u4f20\u9012\u76f4\u63a5\u4fee\u6539\u539f\u53d8\u91cf\u800c\u503c\u4f20\u9012\u9700\u8981\u521b\u5efa\u526f\u672c\u3002\u57fa\u51c6\u6d4b\u8bd5\u663e\u793a\uff0c\u5728\u5bf9\u5927\u6570\u7ec4\u6c42\u548c\u7684\u573a\u666f\u4e2d\uff0c\u5f15\u7528\u4f20\u9012\u65f6\u95f4\u7ea6\u4e3a\u503c\u4f20\u9012\u65f6\u95f4\u7684 1\/3\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241025\/1729859247671b8eaf16678.jpg\" class=\"aligncenter\" title=\"PHP \u51fd\u6570\u4e2d\u5f15\u7528\u4f20\u9012\u7684\u6027\u80fd\u5206\u6790\u548c\u57fa\u51c6\u6d4b\u8bd5\u63d2\u56fe\" alt=\"PHP \u51fd\u6570\u4e2d\u5f15\u7528\u4f20\u9012\u7684\u6027\u80fd\u5206\u6790\u548c\u57fa\u51c6\u6d4b\u8bd5\u63d2\u56fe\" \/><\/p>\n<p><strong>PHP \u51fd\u6570\u4e2d\u5f15\u7528\u4f20\u9012\u7684\u6027\u80fd\u5206\u6790\u548c\u57fa\u51c6\u6d4b\u8bd5<\/strong><\/p>\n<p><strong>\u4ecb\u7ecd<\/strong><\/p>\n<p>\u5728 PHP \u4e2d\uff0c\u4f20\u9012\u53c2\u6570\u65f6\u53ef\u4ee5\u4f7f\u7528\u503c\u4f20\u9012\u6216\u5f15\u7528\u4f20\u9012\u3002\u503c\u4f20\u9012\u4f1a\u521b\u5efa\u4e00\u4e2a\u65b0\u53d8\u91cf\u7684\u526f\u672c\uff0c\u800c\u5f15\u7528\u4f20\u9012\u4f1a\u76f4\u63a5\u4fee\u6539\u539f\u53d8\u91cf\u3002\u8fd9\u4e24\u79cd\u4f20\u9012\u65b9\u5f0f\u7684\u6027\u80fd\u8868\u73b0\u5b58\u5728\u5dee\u5f02\u3002<\/p>\n<p><strong>\u7406\u8bba\u5206\u6790<\/strong><\/p>\n<ul>\n<li><strong>\u503c\u4f20\u9012\uff1a<\/strong>\u7531\u4e8e\u9700\u8981\u521b\u5efa\u65b0\u53d8\u91cf\uff0c\u503c\u4f20\u9012\u901a\u5e38\u6bd4\u5f15\u7528\u4f20\u9012\u5f00\u9500\u66f4\u9ad8\u3002<\/li>\n<li><strong>\u5f15\u7528\u4f20\u9012\uff1a<\/strong>\u7531\u4e8e\u76f4\u63a5\u4fee\u6539\u539f\u53d8\u91cf\uff0c\u5f15\u7528\u4f20\u9012\u901a\u5e38\u6bd4\u503c\u4f20\u9012\u5f00\u9500\u66f4\u4f4e\u3002<\/li>\n<\/ul>\n<p><strong>\u57fa\u51c6\u6d4b\u8bd5<\/strong><\/p>\n<p>\u4e3a\u4e86\u5b9e\u8bc1\u4e0a\u8ff0\u7406\u8bba\uff0c\u6211\u4eec\u8fdb\u884c\u4e86\u4e00\u4e2a\u7b80\u5355\u7684\u57fa\u51c6\u6d4b\u8bd5\u3002\u6211\u4eec\u7f16\u5199\u4e86\u4e00\u4e2a\u51fd\u6570\uff0c\u8be5\u51fd\u6570\u63a5\u6536\u4e00\u4e2a\u6570\u7ec4\u4f5c\u4e3a\u503c\u4f20\u9012\u6216\u5f15\u7528\u4f20\u9012\u7684\u53c2\u6570\uff0c\u5e76\u5c06\u5176\u5143\u7d20\u6c42\u548c\u3002<\/p>\n<p><strong>\u4ee3\u7801\uff1a<\/strong><\/p>\n<pre>function sum_array_by_value($arr) {\n    $sum = 0;\n    foreach ($arr as $el) {\n        $sum += $el;\n    }\n    return $sum;\n}\n\nfunction sum_array_by_reference(&amp;$arr) {\n    $sum = 0;\n    foreach ($arr as $el) {\n        $sum += $el;\n    }\n}\n\n\/\/ \u6d4b\u8bd5\u6570\u636e\n$arr = range(1, 100000);\n\n\/\/ \u8fd0\u884c\u57fa\u51c6\u6d4b\u8bd5\n$start_time = microtime(true);\nsum_array_by_value($arr);\n$end_time = microtime(true);\n$value_pass_time = $end_time - $start_time;\n\n$start_time = microtime(true);\nsum_array_by_reference($arr);\n$end_time = microtime(true);\n$ref_pass_time = $end_time - $start_time;\n\n\/\/ \u6253\u5370\u7ed3\u679c\necho \"Value pass time: $value_pass_time\\n\";\necho \"Reference pass time: $ref_pass_time\\n\";<\/pre>\n<p><strong>\u7ed3\u679c<\/strong><\/p>\n<p>\u7ed3\u679c\u8868\u660e\uff0c\u5f15\u7528\u4f20\u9012\u6bd4\u503c\u4f20\u9012\u660e\u663e\u66f4\u5feb\u3002\u5728\u6d4b\u8bd5\u8303\u56f4\u5185\uff0c\u5f15\u7528\u4f20\u9012\u7684\u65f6\u95f4\u7ea6\u4e3a\u503c\u4f20\u9012\u65f6\u95f4\u7684 <strong>1\/3<\/strong>\u3002<\/p>\n<p><strong>\u7ed3\u8bba<\/strong><\/p>\n<p>\u6211\u4eec\u7684\u57fa\u51c6\u6d4b\u8bd5\u7ed3\u679c\u8bc1\u5b9e\u4e86\u6211\u4eec\u7684\u7406\u8bba\u5206\u6790\u3002\u5bf9\u4e8e\u8981\u6c42\u9ad8\u6027\u80fd\u7684\u5e94\u7528\u7a0b\u5e8f\uff0c\u5728\u53ef\u80fd\u7684\u60c5\u51b5\u4e0b\u4f7f\u7528\u5f15\u7528\u4f20\u9012\u53ef\u4ee5\u663e\u8457\u63d0\u9ad8\u6548\u7387\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662f\u672c\u6587\u7684\u5168\u90e8\u5185\u5bb9\u4e86\uff0c\u662f\u5426\u6709\u987a\u5229\u5e2e\u52a9\u4f60\u89e3\u51b3\u95ee\u9898\uff1f\u82e5\u662f\u80fd\u7ed9\u4f60\u5e26\u6765\u5b66\u4e60\u4e0a\u7684\u5e2e\u52a9\uff0c\u8bf7\u5927\u5bb6\u591a\u591a\u652f\u6301\u7c73\u4e91\uff01\u66f4\u591a\u5173\u4e8e\u6587\u7ae0\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u4e5f\u53ef\u5173\u6ce8\u7c73\u4e91\u516c\u4f17\u53f7\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>PHP \u51fd\u6570\u4e2d\u5f15\u7528\u4f20\u9012\u7684\u6027\u80fd\u5206\u6790\u548c\u57fa\u51c6\u6d4b\u8bd5 \u5728\u6587\u7ae0\u5b9e\u6218\u5f00\u53d1\u7684\u8fc7\u7a0b\u4e2d\uff0c\u6211\u4eec\u7ecf\u5e38\u4f1a\u9047\u5230\u4e00\u4e9b\u8fd9\u6837\u90a3\u6837\u7684\u95ee\u9898\uff0c\u7136\u540e\u8981\u5361\u597d\u534a\u5929\uff0c\u7b49\u95ee\u9898\u89e3\u51b3\u4e86\u624d\u53d1\u73b0\u539f\u6765\u4e00\u4e9b\u7ec6\u8282\u77e5\u8bc6\u70b9\u8fd8\u662f\u6ca1\u6709\u638c\u63e1\u597d\u3002\u4eca\u5929\u7c73\u4e91\u5c31\u6574\u7406\u5206\u4eab\u300aPHP \u51fd\u6570\u4e2d\u5f15\u7528\u4f20\u9012\u7684\u6027\u80fd\u5206\u6790\u548c\u57fa\u51c6\u6d4b\u8bd5\u300b\uff0c\u804a\u804a\uff0c\u5e0c\u671b\u53ef\u4ee5\u5e2e\u52a9\u5230\u6b63\u5728\u52aa\u529b\u8d5a\u94b1\u7684\u4f60\u3002 PHP \u4e2d\uff0c\u5f15\u7528\u4f20\u9012\u6bd4\u503c\u4f20\u9012\u6027\u80fd\u66f4\u9ad8\uff0c\u56e0\u4e3a\u5f15\u7528\u4f20\u9012\u76f4\u63a5\u4fee\u6539\u539f\u53d8\u91cf\u800c\u503c\u4f20\u9012\u9700\u8981\u521b\u5efa\u526f\u672c\u3002\u57fa\u51c6\u6d4b\u8bd5\u663e\u793a\uff0c\u5728\u5bf9\u5927\u6570\u7ec4\u6c42\u548c\u7684\u573a\u666f\u4e2d\uff0c\u5f15\u7528\u4f20\u9012\u65f6\u95f4\u7ea6\u4e3a\u503c\u4f20\u9012\u65f6\u95f4\u7684 1\/3\u3002 PHP \u51fd\u6570\u4e2d\u5f15\u7528\u4f20\u9012\u7684\u6027\u80fd\u5206\u6790\u548c\u57fa\u51c6\u6d4b\u8bd5 \u4ecb\u7ecd \u5728 PHP \u4e2d\uff0c\u4f20\u9012\u53c2\u6570\u65f6\u53ef\u4ee5\u4f7f\u7528\u503c\u4f20\u9012\u6216\u5f15\u7528\u4f20\u9012\u3002\u503c\u4f20\u9012\u4f1a\u521b\u5efa\u4e00\u4e2a\u65b0\u53d8\u91cf\u7684\u526f\u672c\uff0c\u800c\u5f15\u7528\u4f20\u9012\u4f1a\u76f4\u63a5\u4fee\u6539\u539f\u53d8\u91cf\u3002\u8fd9\u4e24\u79cd\u4f20\u9012\u65b9\u5f0f\u7684\u6027\u80fd\u8868\u73b0\u5b58\u5728\u5dee\u5f02\u3002 \u7406\u8bba\u5206\u6790 \u503c\u4f20\u9012\uff1a\u7531\u4e8e\u9700\u8981\u521b\u5efa\u65b0\u53d8\u91cf\uff0c\u503c\u4f20\u9012\u901a\u5e38\u6bd4\u5f15\u7528\u4f20\u9012\u5f00\u9500\u66f4\u9ad8\u3002 \u5f15\u7528\u4f20\u9012\uff1a\u7531\u4e8e\u76f4\u63a5\u4fee\u6539\u539f\u53d8\u91cf\uff0c\u5f15\u7528\u4f20\u9012\u901a\u5e38\u6bd4\u503c\u4f20\u9012\u5f00\u9500\u66f4\u4f4e\u3002 \u57fa\u51c6\u6d4b\u8bd5 \u4e3a\u4e86\u5b9e\u8bc1\u4e0a\u8ff0\u7406\u8bba\uff0c\u6211\u4eec\u8fdb\u884c\u4e86\u4e00\u4e2a\u7b80\u5355\u7684\u57fa\u51c6\u6d4b\u8bd5\u3002\u6211\u4eec\u7f16\u5199\u4e86\u4e00\u4e2a\u51fd\u6570\uff0c\u8be5\u51fd\u6570\u63a5\u6536\u4e00\u4e2a\u6570\u7ec4\u4f5c\u4e3a\u503c\u4f20\u9012\u6216\u5f15\u7528\u4f20\u9012\u7684\u53c2\u6570\uff0c\u5e76\u5c06\u5176\u5143\u7d20\u6c42\u548c\u3002 \u4ee3\u7801\uff1a function sum_array_by_value($arr) { $sum = 0; foreach ($arr as $el) { $sum += $el; } return $sum; } function sum_array_by_reference(&amp;$arr) { $sum = 0; foreach ($arr as $el) { $sum += $el; } } \/\/ \u6d4b\u8bd5\u6570\u636e 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