使用flock函数

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使用flock函数实例


08.txt文件内容：heightman

<?php
        $filename = '08.txt';
        $fd = fopen($filename,'w');
        flock($fd,LOCK_EX);
        fwrite($fd,"heightman1");
        flock($fd,LOCK_UN);
        fclose($fd);
        readfile($filename);
?>



执行结果：
heightman1

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