（转）php读写文件

 

php读写文件

//例1

if $_POST['submit']=='提交' {
$handle = fopen("list.txt", "w");
fwrite($handle,$_POST['text']);
fclose($handle);
}
?>

<?php <br /> require "list.txt"; <br> ?> <br>

   

function readfromfile($file_name) { //File Reading
    if (file_exists($file_name)) {
        if (PHP_VERSION >= "4.3.0") return file_get_contents($file_name);
        $filenum=fopen($file_name,"r");
        $sizeofit=filesize($file_name);
        if ($sizeofit         @flock($filenum,LOCK_EX);
        $file_data=fread($filenum, $sizeofit);
        fclose($filenum);
        return $file_data;
    } else return '';
}

function writetofile ($filename, $data) { //File Writing
    $filenum=@fopen($filename,"w");
    if (!$filenum) {
        return false;
    }
    flock($filenum,LOCK_EX);
    $file_data=fwrite($filenum,$data);
    fclose($filenum);
    return true;
}
   
?>