Online PHP editor | perf for lmaPR

<?php function tryGetValue1( $array, $key, Closure $default ) { return array_key_exists($key, $array) ? $array[$key] : $default(); } function tryGetValue2( $array, $key, Closure $default ) { return ($value = @$array[$key]) !== null || array_key_exists($key, $array) ? $value : $default(); } function tryGetValue3( $array, $key, Closure $default ) { return isset($array[$key]) || array_key_exists($key, $array) ? $array[$key] : $default(); } function tryGetValueNotNull1( $array, $key, Closure $default ) { return ($value = @$array[$key]) !== null ? $value : $default(); } function tryGetValueNotNull2( $array, $key, Closure $default ) { return isset($array[$key]) ? $array[$key] : $default(); } $derp = function() { return 0; }; $k = array( 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j' ); $r = array( 'a' => 1, 'b' => 2, 'c' => 3, 'd' => 4, 'e' => 5 ); $x = 0; // "spin up" any JIT beforehand for ( $i = 0; $i < 100; ++$i ) { $x &= tryGetValue1( $r, $k[$i%10], $derp ); if ( $x > 5 ) throw new RuntimeException('The sun might be exploding.'); } for ( $i = 0; $i < 100; ++$i ) { $x &= tryGetValue2( $r, $k[$i%10], $derp ); if ( $x > 5 ) throw new RuntimeException('The sun might be exploding.'); } for ( $i = 0; $i < 100; ++$i ) { $x &= tryGetValue3( $r, $k[$i%10], $derp ); if ( $x > 5 ) throw new RuntimeException('The sun might be exploding.'); } for ( $i = 0; $i < 100; ++$i ) { $x &= tryGetValueNotNull1( $r, $k[$i%10], $derp ); if ( $x > 5 ) throw new RuntimeException('The sun might be exploding.'); } for ( $i = 0; $i < 100; ++$i ) { $x &= tryGetValueNotNull2( $r, $k[$i%10], $derp ); if ( $x > 5 ) throw new RuntimeException('The sun might be exploding.'); } $start=microtime(true); // start timer for ( $i = 0; $i < 50000; ++$i ) { $x = tryGetValue1( $r, $k[$i%10], $derp ); if ( $x > 5 ) throw new RuntimeException('The sun might be exploding.'); } $end=microtime(true); // end timer echo 'tryGetValue1: ', substr( $end-$start, 0, 6 ), PHP_EOL; // echo results $start=microtime(true); // start timer for ( $i = 0; $i < 50000; ++$i ) { $x = tryGetValue2( $r, $k[$i%10], $derp ); if ( $x > 5 ) throw new RuntimeException('The sun might be exploding.'); } $end=microtime(true); // end timer echo 'tryGetValue2: ', substr( $end-$start, 0, 6 ), PHP_EOL; // echo results $start=microtime(true); // start timer for ( $i = 0; $i < 50000; ++$i ) { $x = tryGetValue3( $r, $k[$i%10], $derp ); if ( $x > 5 ) throw new RuntimeException('The sun might be exploding.'); } $end=microtime(true); // end timer echo 'tryGetValue3: ', substr( $end-$start, 0, 6 ), PHP_EOL; // echo results $start=microtime(true); // start timer for ( $i = 0; $i < 50000; ++$i ) { $x = tryGetValueNotNull1( $r, $k[$i%10], $derp ); if ( $x > 5 ) throw new RuntimeException('The sun might be exploding.'); } $end=microtime(true); // end timer echo 'tryGetValueNotNull1: ', substr( $end-$start, 0, 6 ), PHP_EOL; // echo results $start=microtime(true); // start timer for ( $i = 0; $i < 50000; ++$i ) { $x = tryGetValueNotNull2( $r, $k[$i%10], $derp ); if ( $x > 5 ) throw new RuntimeException('The sun might be exploding.'); } $end=microtime(true); // end timer echo 'tryGetValueNotNull2: ', substr( $end-$start, 0, 6 ), PHP_EOL; // echo results

Version	System time (s)	User time (s)	Memory (MiB)
7.4.28	0.004	0.035	16.55
7.1.7	0.007	0.052	17.19
7.1.6	0.013	0.082	19.13
7.1.5	0.003	0.081	16.96
7.1.0	0.000	0.127	22.54
7.0.20	0.000	0.057	16.73
7.0.10	0.017	0.090	20.07
7.0.9	0.010	0.143	19.98
7.0.8	0.007	0.103	20.09
7.0.7	0.007	0.143	20.04
7.0.6	0.007	0.093	20.04
7.0.5	0.003	0.127	20.43
7.0.4	0.010	0.107	19.96
7.0.3	0.010	0.123	20.07
7.0.2	0.013	0.110	20.18
7.0.1	0.020	0.083	20.07
7.0.0	0.013	0.133	20.10
5.6.28	0.007	0.153	20.98
5.6.25	0.007	0.173	20.77
5.6.24	0.007	0.160	20.78
5.6.23	0.003	0.193	20.74
5.6.22	0.000	0.233	20.70
5.6.21	0.017	0.203	20.80
5.6.20	0.000	0.217	21.00
5.6.19	0.007	0.203	21.16
5.6.18	0.000	0.237	21.12
5.6.17	0.013	0.177	21.06
5.6.16	0.010	0.210	21.16
5.6.15	0.007	0.223	21.23
5.6.14	0.007	0.210	21.03
5.6.13	0.007	0.210	20.99
5.6.12	0.007	0.223	21.07
5.6.11	0.010	0.180	21.11
5.6.10	0.010	0.197	21.00
5.6.9	0.010	0.163	21.04
5.6.8	0.007	0.180	20.45
5.6.7	0.020	0.177	20.48
5.6.6	0.010	0.210	20.37
5.6.5	0.003	0.213	20.48
5.6.4	0.007	0.197	20.50
5.6.3	0.010	0.200	20.55
5.6.2	0.013	0.203	20.53
5.6.1	0.003	0.213	20.41
5.6.0	0.007	0.190	20.53
5.5.38	0.027	0.207	20.40
5.5.37	0.007	0.210	20.55
5.5.36	0.010	0.253	20.45
5.5.35	0.010	0.220	20.42
5.5.34	0.020	0.207	20.98
5.5.33	0.020	0.233	20.89
5.5.32	0.003	0.217	20.93
5.5.31	0.010	0.213	20.95
5.5.30	0.013	0.207	20.92
5.5.29	0.013	0.200	20.97
5.5.28	0.020	0.173	20.95
5.5.27	0.000	0.173	20.93
5.5.26	0.017	0.210	20.94
5.5.25	0.013	0.187	20.76
5.5.24	0.000	0.213	20.30
5.5.23	0.013	0.177	20.30
5.5.22	0.023	0.193	20.07
5.5.21	0.000	0.240	20.30
5.5.20	0.007	0.223	20.25
5.5.19	0.023	0.197	20.23
5.5.18	0.003	0.183	20.30
5.5.16	0.010	0.193	20.16
5.5.15	0.007	0.220	20.29
5.5.14	0.010	0.207	20.29
5.5.13	0.020	0.223	20.20
5.5.12	0.003	0.173	20.31
5.5.11	0.007	0.193	20.13
5.5.10	0.003	0.200	20.16
5.5.9	0.013	0.257	20.11
5.5.8	0.017	0.193	20.20
5.5.7	0.010	0.173	20.12
5.5.6	0.007	0.183	20.02
5.5.5	0.010	0.207	20.20
5.5.4	0.010	0.160	20.14
5.5.3	0.003	0.197	20.20
5.5.2	0.007	0.210	20.16
5.5.1	0.000	0.207	20.03
5.5.0	0.020	0.227	20.17