PHP/File Directory/fseek — различия между версиями
Admin (обсуждение | вклад) м (1 версия) |
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Текущая версия на 07:04, 26 мая 2010
Constant Reference Points for fseek()
SEEK_SET (Default) the beginning of the file
SEEK_CUR The current location of the file pointer
SEEK_END One byte past the end of the file
Moving Around a File with fseek()
<html>
<head>
<title>Moving Around a File with fseek()</title>
</head>
<body>
<div>
<?php
$filename = "data.txt";
$fp = fopen( $filename, "r" ) or die("Couldn"t open $filename");
$fsize = filesize($filename);
$halfway = (int)( $fsize / 2 );
print "Halfway point: $halfway <br/>\n";
fseek( $fp, $halfway );
$chunk = fread( $fp, ($fsize - $halfway) );
print $chunk;
?>
</div>
</body>
</html>
Using the fseek() Function
<?php
$fr = fopen("data.dat", "r");
if(!$fr) exit;
fseek($fr, 10);
fseek($fr, -10, SEEK_END);
fseek($fr, 2, SEEK_CUR);
?>