Online PHP editor | perf for 51jXY

@ 2022-06-30T10:18:14Z

<?php

function acquire_some_resource() {
	return new class {
		public function __construct() { echo "<locked>\n"; }
		public function __destruct() { echo "</locked>\n"; }
	};
}

echo "acquire some_resource\n";
$some_resource = acquire_some_resource();
echo "create fn capturing some_resource by value\n";
$fn = function () use ($some_resource) {
	$some_resource = null; // this line actually doesn't have any effect
};
echo "call fn\n";
$fn();
echo "unset fn\n";
$fn = null;
echo "unset some_resource\n";
$some_resource = null;
echo "DONE.\n";

Here you find the average performance (time & memory) of each version. A grayed out version indicates it didn't complete successfully (based on exit-code).

Version	System time (s)	User time (s)	Memory (MiB)
8.3.6	0.011	0.004	16.75
8.3.5	0.007	0.010	20.06
8.3.4	0.014	0.007	18.79
8.3.3	0.012	0.003	18.67
8.3.2	0.007	0.000	24.18
8.3.1	0.000	0.008	24.66
8.3.0	0.000	0.008	26.16
8.2.18	0.000	0.014	25.92
8.2.17	0.011	0.003	22.96
8.2.16	0.014	0.007	22.96
8.2.15	0.004	0.004	25.66
8.2.14	0.004	0.004	24.66
8.2.13	0.007	0.000	26.16
8.2.12	0.004	0.004	26.16
8.2.11	0.009	0.003	22.30
8.2.10	0.006	0.003	21.89
8.1.28	0.007	0.011	25.92
8.1.27	0.005	0.003	23.99
8.1.26	0.004	0.004	26.35
8.1.25	0.007	0.000	28.09
8.1.24	0.010	0.000	20.36
8.1.23	0.000	0.009	20.24
8.1.7	0.003	0.007	17.48

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