Online PHP editor | perf for 72arb

<?php function realValue($value) { if ( is_string($value) && strpos($value, '"SuperClosure\Serialize"') !== false ){ return 'closure!'; } return $value; } function rand_string($len) { $chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"; $size = strlen($chars); $str = null; for ($i = 0; $i < $len; $i++) { $str .= $chars[ rand( 0, $size - 1 ) ]; } return $str; } $records = []; for ($i = 1; $i <= 2000; $i++) { $records[$i] = rand_string(1000); } // Ignore above, just generate a random string with 20,000 records. $read_value = null; $realValue_bench_start = microtime(true); foreach ($records as $record) { $read_value = realValue($record); } $realValue_bench_end = microtime(true); $directAccess_bench_start = microtime(true); foreach ($records as $record) { $read_value = $record; } $directAccess_bench_end = microtime(true); $diffRealValue = $realValue_bench_end - $realValue_bench_start; $diffDirectAccess = $directAccess_bench_end - $directAccess_bench_start; echo("readValue time: $diffRealValue"); echo("\ndirectAccess time: $diffDirectAccess"); echo("\ndifference:" . ($diffRealValue - $diffDirectAccess));

Version	System time (s)	User time (s)	Memory (MiB)
7.2.4	0.234	0.189	20.40
7.2.3	0.448	0.323	20.41
7.2.2	0.206	0.163	20.24
7.2.1	0.236	0.170	20.38
7.2.0	0.348	0.175	20.52
7.1.16	0.311	0.354	19.23
7.1.15	0.267	0.369	19.23
7.1.14	0.449	0.457	19.05
7.1.13	0.219	0.287	19.36
7.1.12	0.205	0.303	19.07
7.1.11	0.331	0.353	18.41
7.1.10	0.178	0.290	18.60
7.1.9	0.206	0.301	18.43
7.1.8	0.248	0.339	18.62
7.1.7	0.374	0.341	17.92
7.1.6	0.434	0.291	36.06
7.1.5	0.272	0.267	35.80
7.1.4	0.226	0.269	35.46
7.1.3	0.497	0.415	35.36
7.1.2	0.249	0.275	35.19
7.1.1	0.246	0.284	17.00
7.1.0	0.250	0.289	17.25