{"id":202422,"date":"2025-05-13T13:30:29","date_gmt":"2025-05-13T05:30:29","guid":{"rendered":"https:\/\/server.hk\/cnblog\/202422\/"},"modified":"2025-05-13T13:30:29","modified_gmt":"2025-05-13T05:30:29","slug":"php%e5%87%bd%e6%95%b0%e6%96%87%e4%bb%b6%e6%93%8d%e4%bd%9c%e6%8c%87%e5%8d%97%ef%bc%9a%e5%a6%82%e4%bd%95%e5%a4%84%e7%90%86%e5%a4%a7%e6%96%87%e4%bb%b6%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/202422\/","title":{"rendered":"php\u51fd\u6570\u6587\u4ef6\u64cd\u4f5c\u6307\u5357\uff1a\u5982\u4f55\u5904\u7406\u5927\u6587\u4ef6\uff1f"},"content":{"rendered":"

<\/b> <\/p>\n

php\u51fd\u6570\u6587\u4ef6\u64cd\u4f5c\u6307\u5357\uff1a\u5982\u4f55\u5904\u7406\u5927\u6587\u4ef6\uff1f<\/h1>\n

\u4e00\u5206\u8015\u8018\uff0c\u4e00\u5206\u6536\u83b7\uff01\u65e2\u7136\u6253\u5f00\u4e86\u8fd9\u7bc7\u6587\u7ae0\u300aphp\u51fd\u6570\u6587\u4ef6\u64cd\u4f5c\u6307\u5357\uff1a\u5982\u4f55\u5904\u7406\u5927\u6587\u4ef6\uff1f\u300b<\/span>\uff0c\u5c31\u575a\u6301\u770b\u4e0b\u53bb\u5427\uff01\u6587\u4e2d\u5185\u5bb9\u5305\u542b<\/span>\u7b49\u7b49\u77e5\u8bc6\u70b9…\u5e0c\u671b\u4f60\u80fd\u5728\u9605\u8bfb\u672c\u6587\u540e\uff0c\u80fd\u771f\u771f\u5b9e\u5b9e\u5b66\u5230\u77e5\u8bc6\u6216\u8005\u5e2e\u4f60\u89e3\u51b3\u5fc3\u4e2d\u7684\u7591\u60d1\uff0c\u4e5f\u6b22\u8fce\u5927\u4f6c\u6216\u8005\u65b0\u4eba\u670b\u53cb\u4eec\u591a\u7559\u8a00\u8bc4\u8bba\uff0c\u591a\u7ed9\u5efa\u8bae\uff01\u8c22\u8c22\uff01<\/p>\n

<\/p>\n

PHP \u6587\u4ef6\u64cd\u4f5c\u6307\u5357\uff1a\u5982\u4f55\u5904\u7406\u5927\u6587\u4ef6\uff1f<\/strong><\/p>\n

\u5904\u7406\u5927\u6587\u4ef6\u5bf9\u4e8e Web \u5e94\u7528\u7a0b\u5e8f\u6765\u8bf4\u662f\u4e00\u4e2a\u5e38\u89c1\u7684\u6311\u6218\u3002PHP \u63d0\u4f9b\u4e86\u591a\u79cd\u65b9\u6cd5\u6765\u5904\u7406\u5927\u6587\u4ef6\uff0c\u672c\u6587\u5c06\u4ecb\u7ecd\u8fd9\u4e9b\u65b9\u6cd5\u5e76\u63d0\u4f9b\u5b9e\u9645\u793a\u4f8b\u3002<\/p>\n

\u65b9\u6cd5 1\uff1afread() \u548c fwrite()<\/strong><\/p>\n

\u8fd9\u662f\u6700\u57fa\u672c\u7684\u65b9\u6cd5\uff0c\u4f46\u5bf9\u4e8e\u5927\u6587\u4ef6\u6765\u8bf4\u6548\u7387\u53ef\u80fd\u5f88\u4f4e\u3002<\/p>\n

$handle = fopen(\"large-file.txt\", \"rb\");\nwhile (($content = fread($handle, 1024)) !== false) {\n    \/\/ \u5904\u7406\u6570\u636e\n}\nfclose($handle);<\/pre>\n
\u65b9\u6cd5 2\uff1afile_get_contents() \u548c file_put_contents()<\/strong><\/p>\n
\u8fd9\u4e9b\u51fd\u6570\u5c06\u6574\u4e2a\u6587\u4ef6\u8bfb\u5165\u6216\u5199\u5165\u5185\u5b58\uff0c\u56e0\u6b64\u4e0d\u9002\u5408\u5927\u6587\u4ef6\u3002<\/p>\n
$content = file_get_contents(\"large-file.txt\");\n\n\/\/ \u5904\u7406\u6570\u636e\n\nfile_put_contents(\"new-file.txt\", $content);<\/pre>\n
\u65b9\u6cd5 3\uff1aSplFileObject<\/strong><\/p>\n
SplFileObject \u63d0\u4f9b\u4e86\u6bd4 fread() \u66f4\u597d\u7684\u6548\u7387\uff0c\u56e0\u4e3a\u5b83\u662f\u6d41\u5f0f\u5904\u7406\u7684\u3002<\/p>\n
$file = new SplFileObject(\"large-file.txt\");\nwhile (!$file->eof()) {\n    $content = $file->fgets();\n    \/\/ \u5904\u7406\u6570\u636e\n}<\/pre>\n
\u65b9\u6cd5 4\uff1aGenerator<\/strong><\/p>\n
Generator \u53ef\u4ee5\u901a\u8fc7\u9010\u884c\u5904\u7406\u6587\u4ef6\u6765\u904d\u5386\u5927\u6587\u4ef6\uff0c\u4ece\u800c\u51cf\u5c11\u5185\u5b58\u6d88\u8017\u3002<\/p>\n
function readFile($filename) {\n    $handle = fopen($filename, \"rb\");\n    try {\n        while (($content = fgets($handle)) !== false) {\n            yield $content;\n        }\n    } finally {\n        fclose($handle);\n    }\n}\n\nforeach (readFile(\"large-file.txt\") as $line) {\n    \/\/ \u5904\u7406\u6570\u636e\n}<\/pre>\n
\u5b9e\u6218\u6848\u4f8b<\/strong><\/p>\n
\u4ee5\u4e0b\u793a\u4f8b\u5c55\u793a\u4e86\u5982\u4f55\u4f7f\u7528 SplFileObject \u4ece\u5927\u6587\u4ef6\u4e2d\u63d0\u53d6\u5355\u8bcd\uff1a<\/p>\n
$file = new SplFileObject(\"large-book.txt\");\n$words = [];\nwhile (!$file->eof()) {\n    $line = $file->fgets();\n    $words = array_merge($words, explode(\" \", $line));\n}\n\nprint_r($words);<\/pre>\n
\u6ce8\u610f\uff1a<\/strong><\/p>\n
\u5f53\u5904\u7406\u5927\u6587\u4ef6\u65f6\uff0c\u8bf7\u8bb0\u4f4f\u4ee5\u4e0b\u4e8b\u9879\uff1a<\/p>\n
    \n
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    php\u51fd\u6570\u6587\u4ef6\u64cd\u4f5c\u6307\u5357\uff1a\u5982\u4f55\u5904\u7406...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4925],"tags":[],"class_list":["post-202422","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202422","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=202422"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202422\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=202422"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=202422"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=202422"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}