3v4l.org

run code in 300+ PHP versions simultaneously
<?php /* How many times the code under test should run in each function */ define('LOOP',15); function f1(&$md5) { $path = NULL; $yy = date('y'); $ab = substr($md5, 0, 2); $cd = substr($md5, 2, 2); for($i=0; $i<LOOP; ++$i) { $path = 'some' . '/'; $path .= $yy . '/'; $path .= $ab . '/'; $path .= $cd . '/'; } } function f2(&$md5) { $path = NULL; $yy = date('y'); $ab = substr($md5, 0, 2); $cd = substr($md5, 2, 2); for($i=0; $i<LOOP; ++$i) { $path = sprintf('%s/%s/%s/%s', 'some', $yy, $ab, $cd); } } $md5 = md5(str_shuffle('ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890')); $start = microtime(true); f1($md5); $stop = microtime(true); $time1 = $stop - $start; $start = microtime(true); f2($md5); $stop = microtime(true); $time2 = $stop - $start; echo $time1 . "\t"; echo $time2 . "\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).

VersionSystem time (s)User time (s)Memory (MiB)
7.2.00.0000.01319.57
7.1.70.0000.00817.27
7.1.60.0070.01419.46
7.1.50.0130.01017.05
7.1.00.0030.04322.44
7.0.200.0080.00316.80
7.0.140.0000.07721.96
7.0.110.0070.08319.99
7.0.100.0130.07319.94
7.0.90.0130.07720.10
7.0.80.0070.08319.94
7.0.70.0030.08020.08
7.0.60.0030.08319.66
7.0.50.0100.08320.39
7.0.40.0170.06719.96
7.0.30.0170.06020.16
7.0.20.0070.04320.03
7.0.10.0100.05320.14
7.0.00.0070.05720.20
5.6.280.0000.10321.11
5.6.260.0130.04320.73
5.6.250.0130.07320.59
5.6.240.0070.09020.61
5.6.230.0100.08320.71
5.6.220.0100.04720.71
5.6.210.0070.05720.64
5.6.200.0070.08321.09
5.6.190.0100.07321.29
5.6.180.0070.08321.23
5.6.170.0070.08020.95
5.6.160.0100.08320.99
5.6.150.0070.08720.99
5.6.140.0030.06720.93
5.6.130.0030.08721.02
5.6.120.0070.08321.08
5.6.110.0170.06721.27
5.6.100.0170.07321.12
5.6.90.0130.08021.13
5.6.80.0100.07320.54
5.6.70.0170.07320.34
5.6.60.0100.08020.57
5.6.50.0100.07320.63
5.6.40.0030.07720.59
5.6.30.0070.08720.42
5.6.20.0100.04320.64
5.6.10.0070.08020.49
5.6.00.0100.07020.28
5.5.380.0030.07720.25
5.5.370.0070.07320.42
5.5.360.0030.07320.25
5.5.350.0130.06320.16
5.5.340.0100.07720.91
5.5.330.0100.05720.90
5.5.320.0130.04720.86
5.5.310.0070.05020.79
5.5.300.0030.08720.79
5.5.290.0170.08020.96
5.5.280.0070.06320.81
5.5.270.0130.08720.96
5.5.260.0000.09020.90
5.5.250.0170.07320.83
5.5.240.0030.08020.34
5.5.230.0100.07320.34
5.5.220.0070.08020.34
5.5.210.0070.08020.38
5.5.200.0100.04320.35
5.5.190.0070.07720.06
5.5.180.0130.07320.26
5.5.160.0030.07320.30
5.5.150.0030.04020.24
5.5.140.0100.07720.31
5.5.130.0070.05020.30
5.5.120.0000.08720.14
5.5.110.0100.07720.29
5.5.100.0130.07020.12
5.5.90.0170.07020.01
5.5.80.0000.08719.99
5.5.70.0030.08020.28
5.5.60.0070.07020.05
5.5.50.0100.07320.25
5.5.40.0170.07320.14
5.5.30.0070.04720.04
5.5.20.0100.07720.15
5.5.10.0070.07320.13
5.5.00.0030.07719.93
5.4.450.0100.07019.64
5.4.440.0100.08019.28
5.4.430.0030.08719.31
5.4.420.0100.07719.41
5.4.410.0100.07719.34
5.4.400.0070.07719.02
5.4.390.0130.06719.27
5.4.380.0130.07019.21
5.4.370.0070.07718.99
5.4.360.0030.08019.00
5.4.350.0070.07318.95
5.4.340.0070.03719.02
5.4.320.0000.06019.23
5.4.310.0070.07319.01
5.4.300.0100.07319.16
5.4.290.0200.05019.17
5.4.280.0070.07719.16
5.4.270.0170.06719.08
5.4.260.0170.05719.09
5.4.250.0030.08319.22
5.4.240.0070.04019.08
5.4.230.0100.07719.08
5.4.220.0000.08018.97
5.4.210.0070.07018.99
5.4.200.0100.07319.00
5.4.190.0000.08319.30
5.4.180.0030.08319.01
5.4.170.0130.07019.23
5.4.160.0130.07719.32
5.4.150.0070.06719.07
5.4.140.0030.07016.59
5.4.130.0100.06716.48
5.4.120.0070.07716.39
5.4.110.0070.07316.47
5.4.100.0100.06316.63
5.4.90.0070.04016.63
5.4.80.0030.06716.70
5.4.70.0000.07716.70
5.4.60.0130.06316.44
5.4.50.0030.06316.39
5.4.40.0130.07016.44
5.4.30.0070.05716.40
5.4.20.0100.07316.46
5.4.10.0100.07016.54
5.4.00.0200.05715.92
5.3.290.0070.06014.64
5.3.280.0000.08014.60
5.3.270.0070.08314.86
5.3.260.0030.04014.64
5.3.250.0070.07714.47
5.3.240.0100.07014.74
5.3.230.0100.07014.64
5.3.220.0200.06314.58
5.3.210.0070.07314.43
5.3.200.0030.07314.54
5.3.190.0100.07314.70
5.3.180.0100.07014.80
5.3.170.0130.07014.59
5.3.160.0070.08014.55
5.3.150.0030.05014.70
5.3.140.0100.07314.71
5.3.130.0100.07714.51
5.3.120.0100.07714.59
5.3.110.0100.06714.41
5.3.100.0100.06714.17
5.3.90.0100.06713.88
5.3.80.0100.07314.16
5.3.70.0130.07314.01
5.3.60.0070.07314.02
5.3.50.0100.06014.04
5.3.40.0100.07014.10
5.3.30.0100.06313.89
5.3.20.0030.07713.85
5.3.10.0100.05313.68
5.3.00.0070.07013.79
5.2.170.0130.04711.82
5.2.160.0030.06011.82
5.2.150.0130.05711.82
5.2.140.0030.04011.82
5.2.130.0000.05311.82
5.2.120.0070.06011.82
5.2.110.0070.05011.82
5.2.100.0030.06311.82
5.2.90.0030.06311.82
5.2.80.0000.06711.82
5.2.70.0100.04311.82
5.2.60.0100.06011.82
5.2.50.0030.05311.82
5.2.40.0030.06311.82
5.2.30.0030.06011.82
5.2.20.0000.04011.82
5.2.10.0070.05311.82
5.2.00.0070.05711.82
5.1.60.0100.04311.82
5.1.50.0030.03711.82
5.1.40.0070.02011.82
5.1.30.0000.03011.82
5.1.20.0000.03311.82
5.1.10.0170.04011.82
5.1.00.0000.04711.82
5.0.50.0000.02311.82
5.0.40.0000.02011.82
5.0.30.0030.03011.82
5.0.20.0070.01711.82
5.0.10.0100.02711.82
5.0.00.0030.06711.82
4.4.90.0000.04011.82
4.4.80.0100.02711.82
4.4.70.0000.02311.82
4.4.60.0000.02011.82
4.4.50.0030.02011.82
4.4.40.0000.02311.82
4.4.30.0000.02011.82
4.4.20.0000.02311.82
4.4.10.0000.02011.82
4.4.00.0000.02311.82
4.3.110.0070.01011.82
4.3.100.0030.01311.82
4.3.90.0030.01711.82
4.3.80.0030.02711.82
4.3.70.0000.03011.82
4.3.60.0030.01311.82
4.3.50.0030.02711.82
4.3.40.0030.03011.82
4.3.30.0030.02011.82
4.3.20.0000.02311.82
4.3.10.0030.01311.82
4.3.00.0030.02311.82

preferences:
32.61 ms | 400 KiB | 5 Q