note 112646 added to function.fseek
| From: | anonymous@php.net | Date: | Tue, 09 Jul 2013 09:12:00 +0000 |
| Subject: | note 112646 added to function.fseek | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-195538@lists.php.net to get a copy of this message | ||
how to read BIG files using fseek (above 2GB+, upto any size like 4GB+, 100GB+, 100 terabyes+, any
file size, 100 petabytes, max limit is php_float_max ) ?
// seek / set file pointer to 50 GB
my_fseek($fp, floatval(50000000000),1);
function my_fseek($fp,$pos,$first=0) {
// set to 0 pos initially, one-time
if($first) fseek($fp,0,SEEK_SET);
// get pos float value
$pos=floatval($pos);
// within limits, use normal fseek
if($pos<=PHP_INT_MAX)
fseek($fp,$pos,SEEK_CUR);
// out of limits, use recursive fseek
else {
fseek($fp,PHP_INT_MAX,SEEK_CUR);
$pos -= PHP_INT_MAX;
my_fseek($fp,$pos);
}
}
hope this helps.
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