<?php
define('ARRAY_SIZE', 512);
define('RUNS', 1e4);
function benchmark($function, $desc) {
$total_time = 0;
for($i = 0; $i < RUNS; $i++) {
$total_time += $function();
}
echo sprintf('%dx %s took %.5f seconds' . PHP_EOL, RUNS, $desc, $total_time);
}
benchmark(function() {
$r = range(0, ARRAY_SIZE);
$start = microtime(true);
foreach ($r as $k => $v) {
for($i = 0; $i++ < $v;) {
$r[$k] = $v * $v;
}}
return microtime(true) - $start;
}, 'foreach');
benchmark(function() {
$r = range(0, ARRAY_SIZE);
$start = microtime(true);
$r = array_map(function($each) { return $each * $eacha; }, $r);
return microtime(true) - $start;
}, 'array_map');
- Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.7
Process exited with code 137.- 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, expecting ')' in /in/RFTvH on line 13
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, expecting ')' in /in/RFTvH on line 13
Process exited with code 255. - Output for 4.3.2 - 4.3.4
- Parse error: parse error, expecting `')'' in /in/RFTvH on line 13
Process exited with code 255.
preferences:
170.05 ms | 401 KiB | 215 Q