Thrash APCu until it can no longer allocate memory

thrasher-v2.php

<?php

/**
* Thrash APCu until it can no longer allocate memory
 */

header("Cache-Control: no-cache, no-store, must-revalidate");
header("Pragma: no-cache");
header("Expires: 0");

$i = 0;
$multiple = 200;
while( true ) {
	$i++;
	$rand = rand( 40, 100 );
	$data = str_pad( 'a', $rand * $multiple, 'b' );
	apcu_store( "thrash_{$i}", $data );
	if ( $i && $i % 10 ) {
		apcu_delete( 'thrash_' . ( $i - 8 ) );
	}
	if ( $i && $i % 50 ) {
		$info = apcu_cache_info( true );
		if ( $info['mem_size'] > 100000000 ) {
			$multiple = 2;
		} elseif ( $info['mem_size'] > 70000000 ) {
			$multiple = 4;
		} else {
			$multiple = 200;
		}
	}
}