3v4l.org

run code in 300+ PHP versions simultaneously
<?php /* How many times the code under test should run in each function */ define('LOOP',100); 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)
7.3.10.0110.00316.55
7.3.00.0100.00316.80
7.2.130.0130.00316.98
7.2.120.0070.01016.53
7.2.110.0100.00616.78
7.2.100.0100.00516.88
7.2.90.0110.00717.04
7.2.80.0150.00317.14
7.2.70.0040.01117.08
7.2.60.0190.00316.98
7.2.50.0090.00617.09
7.2.40.0140.00616.66
7.2.30.0130.01016.80
7.2.20.0130.01016.54
7.2.10.0090.01316.85
7.2.00.0040.01018.07
7.1.250.0080.00415.74
7.1.70.0080.00017.46
7.1.60.0190.00619.46
7.1.50.0060.01917.12
7.1.00.0030.06322.45
7.0.200.0050.00516.70
7.0.140.0030.07321.95
7.0.100.0170.08020.04
7.0.90.0130.04719.95
7.0.80.0130.07719.98
7.0.70.0100.08019.89
7.0.60.0100.06019.95
7.0.50.0070.06020.35
7.0.40.0130.05719.99
7.0.30.0170.06320.19
7.0.20.0100.06720.19
7.0.10.0170.07019.99
7.0.00.0070.08720.10
5.6.280.0000.07721.11
5.6.250.0100.07720.60
5.6.240.0030.06320.70
5.6.230.0070.06720.59
5.6.220.0230.06020.71
5.6.210.0130.06020.67
5.6.200.0070.08321.05
5.6.190.0030.07720.96
5.6.180.0100.07721.09
5.6.170.0070.08021.04
5.6.160.0070.07321.03
5.6.150.0170.08020.96
5.6.140.0200.07020.95
5.6.130.0030.08720.91
5.6.120.0200.07321.04
5.6.110.0200.07721.02
5.6.100.0200.07721.02
5.6.90.0100.07721.09
5.6.80.0030.09020.50
5.6.70.0200.05020.55
5.6.60.0100.06720.42
5.6.50.0200.06020.45
5.6.40.0030.08020.50
5.6.30.0100.07020.45
5.6.20.0070.06720.38
5.6.10.0170.07720.52
5.6.00.0100.07020.39
5.5.380.0070.06720.36
5.5.370.0000.08320.36
5.5.360.0130.07320.34
5.5.350.0130.08020.38
5.5.340.0130.08020.80
5.5.330.0170.06720.91
5.5.320.0100.08020.92
5.5.310.0100.07720.90
5.5.300.0070.08720.89
5.5.290.0100.09320.93
5.5.280.0030.06320.88
5.5.270.0070.08320.79
5.5.260.0130.08020.89
5.5.250.0070.08720.64
5.5.240.0070.07720.25
5.5.230.0070.08020.19
5.5.220.0100.07720.30
5.5.210.0070.04020.30
5.5.200.0130.04020.16
5.5.190.0200.07020.09
5.5.180.0100.08320.29
5.5.160.0070.08020.19
5.5.150.0130.07020.13
5.5.140.0130.06320.21
5.5.130.0070.07320.06
5.5.120.0100.07320.15
5.5.110.0130.08020.15
5.5.100.0100.04320.02
5.5.90.0100.08020.08
5.5.80.0070.07020.05
5.5.70.0100.08020.05
5.5.60.0070.08020.15
5.5.50.0130.06020.11
5.5.40.0100.04320.10
5.5.30.0170.04320.15
5.5.20.0030.06020.09
5.5.10.0130.07019.98
5.5.00.0130.04020.12
5.4.450.0100.08019.36
5.4.440.0070.05319.56
5.4.430.0130.04319.39
5.4.420.0030.08319.55
5.4.410.0000.08319.41
5.4.400.0130.06718.85
5.4.390.0100.07019.21
5.4.380.0070.05019.23
5.4.370.0130.06019.18
5.4.360.0070.05319.03
5.4.350.0100.03719.05
5.4.340.0030.07319.05
5.4.320.0030.07718.95
5.4.310.0100.07018.87
5.4.300.0130.07019.20
5.4.290.0200.06719.09
5.4.280.0070.06718.84
5.4.270.0100.07719.04
5.4.260.0070.06319.16
5.4.250.0170.07319.08
5.4.240.0100.06719.18
5.4.230.0100.06719.15
5.4.220.0130.07318.84
5.4.210.0000.04719.02
5.4.200.0130.03319.11
5.4.190.0070.03719.03
5.4.180.0170.04719.08
5.4.170.0030.07719.11
5.4.160.0030.07319.25
5.4.150.0030.07019.10
5.4.140.0100.05316.25
5.4.130.0000.05016.42
5.4.120.0030.05716.18
5.4.110.0000.04716.44
5.4.100.0100.03716.52
5.4.90.0000.04016.43
5.4.80.0000.04316.54
5.4.70.0070.03316.43
5.4.60.0030.04016.36
5.4.50.0100.02716.48
5.4.40.0030.05016.39
5.4.30.0030.03716.31
5.4.20.0000.04316.29
5.4.10.0030.03316.29
5.4.00.0100.02715.72
5.3.290.0030.10014.78
5.3.280.0070.04314.63
5.3.270.0100.07314.71
5.3.260.0030.07314.61
5.3.250.0100.07714.64
5.3.240.0070.07314.71
5.3.230.0100.06314.57
5.3.220.0100.07714.52
5.3.210.0030.05314.56
5.3.200.0030.05014.59
5.3.190.0000.05314.69
5.3.180.0030.04014.56
5.3.170.0000.04014.71
5.3.160.0030.04014.61
5.3.150.0070.03314.69
5.3.140.0070.03314.57
5.3.130.0030.03714.55
5.3.120.0100.05314.64
5.3.110.0000.04714.59
5.3.100.0030.03714.01
5.3.90.0030.03714.04
5.3.80.0100.05714.13
5.3.70.0030.04713.95
5.3.60.0030.03714.00
5.3.50.0030.03713.88
5.3.40.0000.04013.86
5.3.30.0070.06713.89
5.3.20.0000.04013.84
5.3.10.0170.04713.78
5.3.00.0030.03713.74
5.2.170.0000.03711.24
5.2.160.0100.03311.18
5.2.150.0000.04011.16
5.2.140.0170.01711.16
5.2.130.0030.02711.16
5.2.120.0000.02711.16
5.2.110.0000.03011.20
5.2.100.0070.02711.16
5.2.90.0030.03011.16
5.2.80.0070.02311.22
5.2.70.0000.03311.16
5.2.60.0070.02711.16
5.2.50.0000.02711.16
5.2.40.0000.02711.16
5.2.30.0000.03711.16
5.2.20.0030.02311.16
5.2.10.0000.02711.16
5.2.00.0030.02711.16
5.1.60.0000.02711.16
5.1.50.0070.02711.16
5.1.40.0000.02711.16
5.1.30.0000.02711.16
5.1.20.0000.02711.16
5.1.10.0000.05311.16
5.1.00.0000.03311.16
5.0.50.0070.01711.16
5.0.40.0000.02011.16
5.0.30.0070.05311.16
5.0.20.0070.04011.16
5.0.10.0030.04711.16
5.0.00.0000.06711.16
4.4.90.0000.01711.16
4.4.80.0030.01311.16
4.4.70.0000.02311.16
4.4.60.0100.00711.16
4.4.50.0070.01011.16
4.4.40.0000.02711.16
4.4.30.0000.01311.16
4.4.20.0000.01711.16
4.4.10.0000.02311.16
4.4.00.0030.03011.16
4.3.110.0070.03011.16
4.3.100.0070.03311.16
4.3.90.0030.03311.16
4.3.80.0030.04711.16
4.3.70.0030.03711.16
4.3.60.0030.03311.16
4.3.50.0000.02011.16
4.3.40.0000.04711.16
4.3.30.0030.02711.16
4.3.20.0070.02011.16
4.3.10.0000.02311.16
4.3.00.0030.02311.16

preferences:
37.64 ms | 401 KiB | 5 Q