{"id":18,"date":"2012-03-29T20:09:14","date_gmt":"2012-03-29T12:09:14","guid":{"rendered":"http:\/\/www.datarelab.com\/blog\/?p=18"},"modified":"2012-03-29T20:09:14","modified_gmt":"2012-03-29T12:09:14","slug":"php%e4%b8%ad%e8%af%bb%e5%86%99%e6%96%87%e4%bb%b6","status":"publish","type":"post","link":"https:\/\/www.datarelab.com\/blog\/Technical_literature\/18.html","title":{"rendered":"PHP\u4e2d\u8bfb\u5199\u6587\u4ef6"},"content":{"rendered":"<pre class=\"brush:php; toolbar: true; auto-links: true;\">\u5728PHP\u4e2d\u8bfb\u5199\u6587\u4ef6\uff0c\u53ef\u4ee5\u7528\u5230\u4e00\u4e0b\u5185\u7f6e\u51fd\u6570\uff1a\r\n\r\n1.fopen\uff08\u521b\u5efa\u6587\u4ef6\u548c\u6253\u5f00\u6587\u4ef6\uff09\r\n\r\n\u8bed\u6cd5\uff1a\r\n\r\nfopen(filename,mode) \r\nfilename\uff0c\u89c4\u5b9a\u8981\u6253\u5f00\u7684\u6587\u4ef6\u3002mode\uff0c\u6253\u5f00\u6587\u4ef6\u7684\u6a21\u5f0f\uff0c\u53ef\u80fd\u7684\u503c\u89c1\u4e0b\u8868\u3002\r\n\r\nmode \u8bf4\u660e \r\n\"r\" \u53ea\u8bfb\u65b9\u5f0f\u6253\u5f00\uff0c\u5c06\u6587\u4ef6\u6307\u9488\u6307\u5411\u6587\u4ef6\u5f00\u5934\u3002 \r\n\"r+\" \u8bfb\u5199\u65b9\u5f0f\u6253\u5f00\uff0c\u5c06\u6587\u4ef6\u6307\u9488\u6307\u5411\u6587\u4ef6\u5f00\u5934\u3002 \r\n\"w\" \u5199\u5165\u65b9\u5f0f\u6253\u5f00\uff0c\u5c06\u6587\u4ef6\u6307\u9488\u6307\u5411\u6587\u4ef6\u5f00\u5934\u5e76\u5c06\u6587\u4ef6\u5927\u5c0f\u622a\u4e3a\u96f6\u3002\u5982\u679c\u6587\u4ef6\u4e0d\u5b58\u5728\u5219\u5c1d\u8bd5\u521b\u5efa\u3002 \r\n\"w+\" \u8bfb\u5199\u65b9\u5f0f\u6253\u5f00\uff0c\u5c06\u6587\u4ef6\u6307\u9488\u6307\u5411\u6587\u4ef6\u5f00\u5934\u5e76\u5c06\u6587\u4ef6\u5927\u5c0f\u622a\u4e3a\u96f6\u3002\u5982\u679c\u6587\u4ef6\u4e0d\u5b58\u5728\u5219\u5c1d\u8bd5\u521b\u5efa\u3002 \r\n\"a\" \u5199\u5165\u65b9\u5f0f\u6253\u5f00\uff0c\u5c06\u6587\u4ef6\u6307\u9488\u6307\u5411\u6587\u4ef6\u672b\u5c3e\u3002\u5982\u679c\u6587\u4ef6\u4e0d\u5b58\u5728\u5219\u5c1d\u8bd5\u521b\u5efa\u3002 \r\n\"a+\" \u8bfb\u5199\u65b9\u5f0f\u6253\u5f00\uff0c\u5c06\u6587\u4ef6\u6307\u9488\u6307\u5411\u6587\u4ef6\u672b\u5c3e\u3002\u5982\u679c\u6587\u4ef6\u4e0d\u5b58\u5728\u5219\u5c1d\u8bd5\u521b\u5efa\u3002 \r\n\r\n\u5982\u679c\u6210\u529f\u6253\u5f00\u6587\u4ef6\uff0cfopen\u51fd\u6570\u7684\u8fd4\u56de\u503c\u662f\u4e00\u4e2a\u6587\u4ef6\u6307\u9488\uff0c\u5982\u679c\u51fa\u9519\uff0c\u8fd4\u56de FALSE\u3002\r\n\r\n\u793a\u4f8b\uff1a\r\n\r\n&lt;?php  \r\n\r\n$fp = fopen(\"test.txt\", \"r\");  \r\n\r\n?&gt; \r\n2.fclose\uff08\u5173\u95ed\u6587\u4ef6\uff09\r\n\r\n\u8bed\u6cd5\uff1a\r\n\r\nfclose(filepointer) \r\nfilepointer\uff0c\u8981\u5173\u95ed\u7684\u6587\u4ef6\u6307\u9488\u3002\u5982\u679c\u6210\u529f\uff0cfclose \u51fd\u6570\u8fd4\u56de TRUE\uff0c\u5982\u679c\u5931\u8d25\uff0cfclose \u51fd\u6570\u8fd4\u56de FALSE\u3002\r\n\r\n\u793a\u4f8b\uff1a\r\n\r\n&lt;?php  \r\n\r\n$fp = fopen(\"test.txt\", \"r\");  \r\n\r\nfclose($fp);  \r\n\r\n?&gt; \r\n3.feof\uff08\u68c0\u6d4b\u662f\u5426\u5df2\u5230\u8fbe\u6587\u4ef6\u672b\u5c3e\uff09\r\n\r\n\u8bed\u6cd5\uff1a\r\n\r\nfeof(filepointer) \r\nfilepointer\uff0c\u8981\u68c0\u6d4b\u7684\u6587\u4ef6\u6307\u9488\uff0c\u8be5\u6307\u9488\u5fc5\u987b\u6307\u5411\u6210\u529f\u6253\u5f00\u6ca1\u6709\u5173\u95ed\u7684\u6587\u4ef6\u3002\u5982\u679c\u6587\u4ef6\u6307\u9488\u5230\u4e86\u6587\u4ef6\u672b\u5c3e\u6216\u8005\u51fa\u9519\u65f6\uff0cfeof\u51fd\u6570\u8fd4\u56de TRUE\u3002\r\n\r\n\u793a\u4f8b\uff1a\r\n\r\n&lt;?php  \r\n\r\n$fp = fopen(\"test.txt\", \"r\");  \r\n\r\nwhile(! feof($fp))  \r\n\r\n{  \r\n\r\n  echo fgets($fp). \"&lt;br \/&gt;\";  \r\n\r\n}  \r\n\r\nfclose($fp);  \r\n\r\n?&gt; \r\n4.fgets\uff08\u4ece\u6587\u4ef6\u6307\u9488\u4e2d\u8bfb\u53d6\u4e00\u884c\uff09\r\n\r\n\u8bed\u6cd5\uff1a\r\n\r\nfgets(filepointer) \r\nfilepointer\uff0c\u8981\u8bfb\u53d6\u7684\u6587\u4ef6\u6307\u9488\u3002\u5982\u679c\u6210\u529f\uff0c\u4ece\u6587\u4ef6\u4e2d\u8bfb\u53d6\u4e00\u884c\u5e76\u8fd4\u56de\u5b57\u7b26\u4e32\uff0c\u5982\u679c\u5931\u8d25\uff0c\u8fd4\u56de FALSE\u3002\r\n\r\n\u793a\u4f8b\uff1a\r\n\r\n&lt;?php  \r\n\r\n$fp = fopen(\"test.txt\", \"r\");  \r\n\r\nif($fp)  \r\n\r\n{  \r\n\r\n    for($i=1;! feof($fp);$i++)  \r\n\r\n    {  \r\n\r\n        echo \"\u884c\".$i.\" : \".fgets($fp). \"&lt;br \/&gt;\";  \r\n\r\n    }  \r\n\r\n}  \r\n\r\nelse \r\n\r\n{  \r\n\r\n    echo \"\u6253\u5f00\u6587\u4ef6\u5931\u8d25\";  \r\n\r\n}  \r\n\r\nfclose($fp);  \r\n\r\n?&gt; \r\n\u5047\u8bbetest.txt\u7684\u5185\u5bb9\u4e3a\uff1a\r\n\r\nhello world  \r\n\r\nhello cnblogs  \r\n\r\nhello heihaozi  \r\n\r\nhello everyone \r\n\u9875\u9762\u8f93\u51fa\u7684\u7ed3\u679c\u4e3a\uff1a\r\n\r\n\u884c1 : hello world   \r\n\r\n\u884c2 : hello cnblogs   \r\n\r\n\u884c3 : hello heihaozi   \r\n\r\n\u884c4 : hello everyone \r\n5.fwrite\uff08\u5199\u5165\u6587\u4ef6\uff09\r\n\r\n\u8bed\u6cd5\uff1a\r\n\r\nfwrite(filepointer,string)  \r\nfilepointer\uff0c\u8981\u5199\u5165\u7684\u6587\u4ef6\u6307\u9488\u3002string\uff0c\u8981\u5199\u5165\u7684\u5b57\u7b26\u4e32\u3002\u5982\u679c\u6210\u529f\uff0c\u8fd4\u56de\u5199\u5165\u7684\u5b57\u7b26\u6570\uff0c\u5982\u679c\u5931\u8d25\uff0c\u8fd4\u56de FALSE\u3002\r\n\r\n\u793a\u4f8b\uff1a\r\n\r\nview sourceprint?&lt;?php  \r\n\r\n$fp = fopen(\"test.txt\", \"w\");\/\/\u6587\u4ef6\u88ab\u6e05\u7a7a\u540e\u518d\u5199\u5165  \r\n\r\nif($fp)  \r\n\r\n{  \r\n\r\n    $count=0;  \r\n\r\n    for($i=1;$i&lt;=5;$i++)  \r\n\r\n    {  \r\n\r\n        $flag=fwrite($fp,\"\u884c\".$i.\" : \".\"Hello World!\\r\\n\");  \r\n\r\n        if(!$flag)  \r\n\r\n        {  \r\n\r\n            echo \"\u5199\u5165\u6587\u4ef6\u5931\u8d25&lt;br&gt;\";  \r\n\r\n            break;  \r\n\r\n        }  \r\n\r\n        $count+=$flag;  \r\n\r\n    }  \r\n\r\n    echo \"\u5171\u5199\u5165\".$count.\"\u4e2a\u5b57\u7b26\";  \r\n\r\n}  \r\n\r\nelse \r\n\r\n{  \r\n\r\n    echo \"\u6253\u5f00\u6587\u4ef6\u5931\u8d25\";  \r\n\r\n}  \r\n\r\nfclose($fp);  \r\n\r\n?&gt; \r\n\u9875\u9762\u8f93\u51fa\u7684\u7ed3\u679c\u4e3a\uff1a\r\n\r\n\u5171\u5199\u5165100\u4e2a\u5b57\u7b26 \r\ntest.txt\u6587\u4ef6\u4f1a\u88ab\u5199\u5165\uff1a\r\n\r\n\u884c1 : Hello World!  \r\n\r\n\u884c2 : Hello World!  \r\n\r\n\u884c3 : Hello World!  \r\n\r\n\u884c4 : Hello World!  \r\n\r\n\u884c5 : Hello World! \r\n\u3000\u3000\r\n\r\n\u6ce8\uff1a\u4e3a\u4e86\u7b80\u5316\u64cd\u4f5c\uff0c\u90e8\u5206\u51fd\u6570\u7684\u53ef\u9009\u53c2\u6570\u6ca1\u6709\u5217\u51fa\u3002<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u5728PHP\u4e2d\u8bfb\u5199\u6587\u4ef6\uff0c\u53ef\u4ee5\u7528\u5230\u4e00\u4e0b\u5185\u7f6e\u51fd\u6570\uff1a 1.fopen\uff08\u521b\u5efa\u6587\u4ef6\u548c\u6253\u5f00\u6587\u4ef6\uff09 \u8bed\u6cd5\uff1a fopen(file [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[28],"class_list":["post-18","post","type-post","status-publish","format-standard","hentry","category-Technical_literature","tag-php"],"views":1169,"_links":{"self":[{"href":"https:\/\/www.datarelab.com\/blog\/wp-json\/wp\/v2\/posts\/18","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.datarelab.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.datarelab.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.datarelab.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.datarelab.com\/blog\/wp-json\/wp\/v2\/comments?post=18"}],"version-history":[{"count":0,"href":"https:\/\/www.datarelab.com\/blog\/wp-json\/wp\/v2\/posts\/18\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.datarelab.com\/blog\/wp-json\/wp\/v2\/media?parent=18"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.datarelab.com\/blog\/wp-json\/wp\/v2\/categories?post=18"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.datarelab.com\/blog\/wp-json\/wp\/v2\/tags?post=18"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}