<?php
ini_set('memory_limit', '2G');
set_time_limit(600);
function bytesToSize($bytes, $precision = 2) {
$symbols = array('B', 'Kb', 'Mb', 'Gb', 'Tb', 'Pb', 'Eb', 'Zb', 'Yb');
$exp = (int)floor(log($bytes) / log(1024));
return sprintf('%.'. $precision .'f '. $symbols[$exp], $bytes / pow(1024, floor($exp)));
}
function mem() {
return bytesToSize(memory_get_usage(true));
}
function test($msg, $test) {
$t = microtime(true);
$test($msg);
echo $msg .': <b>'. sprintf('%.6f', microtime(true) - $t) .'</b><br>';
}
$array = range(0, 3000000);
test('foreach', function ($msg) use ($array) {
echo $msg . ' before loop mem: '. mem() .'<br>';
foreach ($array as $v) {
$b = $v;
}
echo $msg . ' after loop mem: '. mem() .'<br>';
});
test('foreach ref', function ($msg) use ($array) {
echo $msg . ' before loop mem: '. mem() .'<br>';
foreach ($array as &$v) {
$b = $v;
}
unset($v);
echo $msg . ' after loop mem: '. mem() .'<br>';
});
test('for', function ($msg) use ($array) {
echo $msg . ' before loop mem: '. mem() .'<br>';
$so = count($array);
for ($i = 0; $i < $so; ++$i) {
$b = $array[$i];
}
echo $msg . ' after loop mem: '. mem() .'<br>';
});
test('while each -> list', function ($msg) use ($array) {
echo $msg . ' before loop mem: '. mem() .'<br>';
while (list($k, $v) = each($array)) {
$b =$v;
}
echo $msg . ' after loop mem: '. mem() .'<br>';
});
- Output for 5.5.0 - 5.5.9
- Fatal error: Out of memory (allocated 259784704) (tried to allocate 32 bytes) in /in/NT00B on line 22
Process exited with code 255. - Output for 5.4.15 - 5.4.25
- Fatal error: Out of memory (allocated 260308992) (tried to allocate 32 bytes) in /in/NT00B on line 22
Process exited with code 255. - Output for 5.4.0 - 5.4.14
- Fatal error: Out of memory (allocated 260571136) (tried to allocate 32 bytes) in /in/NT00B on line 22
Process exited with code 255. - Output for 5.3.0 - 5.3.28
- Fatal error: Out of memory (allocated 265551872) (tried to allocate 32 bytes) in /in/NT00B on line 22
Process exited with code 255. - Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
- Parse error: syntax error, unexpected T_FUNCTION in /in/NT00B on line 24
Process exited with code 255. - Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
- Parse error: parse error, unexpected T_FUNCTION in /in/NT00B on line 24
Process exited with code 255. - Output for 4.3.2 - 4.3.4
- Parse error: parse error in /in/NT00B on line 24
Process exited with code 255.
preferences:
108.46 ms | 401 KiB | 123 Q