3v4l.org

run code in 300+ PHP versions simultaneously
<?php $vars = array('a1', '1a', 'ačervený'); foreach($vars as $var) { $$var = 'x'; } ${'a1'} = 'y'; ${'1a'} = 'y'; ${'ačervený'} = 'y'; $a = 1; $A = 2; var_dump($a, $A); $ačervený = 'a'; $aČervený = 'b'; var_dump($ačervený, $aČervený);

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)
8.3.60.0070.01416.50
8.3.50.0170.00421.91
8.3.40.0070.00718.75
8.3.30.0040.01519.15
8.3.20.0070.00020.16
8.3.10.0000.00721.90
8.3.00.0040.00419.25
8.2.180.0060.00916.38
8.2.170.0110.00622.96
8.2.160.0100.00322.12
8.2.150.0030.00524.18
8.2.140.0080.00024.66
8.2.130.0030.00626.16
8.2.120.0050.00219.54
8.2.110.0090.00020.52
8.2.100.0120.00017.63
8.2.90.0000.00919.18
8.2.80.0040.00417.97
8.2.70.0080.00017.50
8.2.60.0000.00917.93
8.2.50.0000.00918.07
8.2.40.0050.00318.13
8.2.30.0040.00418.04
8.2.20.0000.00717.72
8.2.10.0080.00017.96
8.2.00.0000.00817.60
8.1.280.0170.00025.92
8.1.270.0080.00018.86
8.1.260.0000.00726.35
8.1.250.0040.00428.09
8.1.240.0030.00624.01
8.1.230.0070.00418.82
8.1.220.0080.00017.74
8.1.210.0040.00418.77
8.1.200.0060.00317.35
8.1.190.0040.00417.10
8.1.180.0050.00318.10
8.1.170.0000.00920.48
8.1.160.0040.00422.08
8.1.150.0000.00718.89
8.1.140.0040.00417.50
8.1.130.0000.00717.76
8.1.120.0040.00417.36
8.1.110.0040.00417.49
8.1.100.0000.00717.46
8.1.90.0000.00717.42
8.1.80.0080.00017.47
8.1.70.0030.00317.33
8.1.60.0030.00617.50
8.1.50.0030.00517.43
8.1.40.0000.00817.46
8.1.30.0080.00017.55
8.1.20.0040.00417.64
8.1.10.0070.00017.43
8.1.00.0050.00317.37
8.0.300.0000.00818.77
8.0.290.0000.00716.63
8.0.280.0030.00318.34
8.0.270.0030.00317.25
8.0.260.0030.00317.27
8.0.250.0030.00316.94
8.0.240.0060.00016.93
8.0.230.0000.00717.03
8.0.220.0000.00716.92
8.0.210.0040.00416.89
8.0.200.0070.00016.84
8.0.190.0000.00716.99
8.0.180.0020.00516.81
8.0.170.0050.00316.81
8.0.160.0050.00316.95
8.0.150.0070.00016.88
8.0.140.0050.00216.71
8.0.130.0000.00713.36
8.0.120.0030.00516.86
8.0.110.0000.00716.80
8.0.100.0000.00816.77
8.0.90.0040.00416.82
8.0.80.0060.01616.94
8.0.70.0040.00416.76
8.0.60.0040.00416.87
8.0.50.0000.00716.84
8.0.30.0070.01516.91
8.0.20.0110.00717.40
8.0.10.0000.00717.05
8.0.00.0110.00616.67
7.4.330.0020.00215.09
7.4.320.0000.00616.50
7.4.300.0090.00016.48
7.4.290.0030.00316.52
7.4.280.0040.00416.50
7.4.270.0070.00016.59
7.4.260.0030.00316.56
7.4.250.0040.00416.57
7.4.240.0050.00216.57
7.4.230.0030.00316.66
7.4.220.0060.01016.43
7.4.210.0100.00416.49
7.4.200.0050.00216.48
7.4.160.0140.00316.26
7.4.150.0170.00017.40
7.4.140.0140.00717.86
7.4.130.0090.00916.38
7.4.120.0090.00916.62
7.4.110.0150.00316.70
7.4.100.0080.00816.77
7.4.90.0060.01116.49
7.4.80.0110.00719.39
7.4.70.0070.01016.25
7.4.60.0080.00816.53
7.4.50.0030.00616.54
7.4.40.0110.00616.20
7.4.30.0040.01416.65
7.4.00.0040.01515.02
7.3.330.0000.00513.09
7.3.320.0090.00613.01
7.3.310.0000.00616.26
7.3.300.0000.00616.38
7.3.290.0040.00416.24
7.3.280.0110.00616.36
7.3.270.0180.00617.40
7.3.260.0120.00616.52
7.3.250.0120.00616.45
7.3.240.0100.00716.29
7.3.230.0120.00816.39
7.3.210.0090.00916.18
7.3.200.0130.00619.39
7.3.190.0060.00916.52
7.3.180.0060.00916.47
7.3.170.0060.01216.48
7.3.160.0110.00616.50
7.2.330.0040.01616.49
7.2.320.0140.00616.69
7.2.310.0130.00316.74
7.2.300.0030.01816.86
7.2.290.0060.01216.63
7.2.00.0000.01219.46
7.1.100.0030.01017.53
7.1.70.0030.01017.38
7.1.60.0100.01019.46
7.1.50.0230.01334.89
7.1.00.0000.08022.30
7.0.200.0140.00716.36
7.0.140.0000.06022.18
7.0.60.0100.07719.79
7.0.50.0070.05017.66
7.0.40.0130.05320.39
7.0.30.0130.04720.30
7.0.20.0300.08020.09
7.0.10.0270.05320.12
7.0.00.0030.05720.25
5.6.280.0100.06720.78
5.6.210.0030.04020.72
5.6.200.0030.04018.19
5.6.190.0030.07020.35
5.6.180.0300.07020.38
5.6.170.0300.04020.48
5.6.160.0070.05320.48
5.6.150.0070.06718.12
5.6.140.0000.05018.21
5.6.130.0070.03718.18
5.6.120.0100.08021.11
5.6.110.0100.08321.11
5.6.100.0030.06320.98
5.6.90.0200.07021.12
5.6.80.0130.06720.38
5.6.70.0300.06720.37
5.5.350.0070.08020.30
5.5.340.0070.04717.89
5.5.330.0030.08720.57
5.5.320.0030.09320.07
5.5.310.0270.03720.21
5.5.300.0070.06717.92
5.5.290.0070.03717.98
5.5.280.0100.05720.77
5.5.270.0030.04020.72
5.5.260.0100.03320.84
5.5.250.0030.07720.77
5.5.240.0070.04320.34
5.4.450.0600.06019.63
5.4.440.0900.05019.52
5.4.430.1070.04019.10
5.4.420.0030.06019.41
5.4.410.0630.05719.42
5.4.400.0230.05718.59
5.4.390.0230.05018.52
5.4.380.0130.05718.56
5.4.370.0300.04018.63
5.4.360.0100.05718.50
5.4.350.0300.05318.68
5.4.340.0170.05718.50
5.4.320.0170.05318.61
5.4.310.0230.05018.58
5.4.300.0170.05018.65
5.4.290.0170.06718.68
5.4.280.0170.05018.67
5.4.270.0170.05718.62
5.4.260.0130.05718.49
5.4.250.0130.05718.61
5.4.240.0300.04718.60
5.4.230.0170.05018.71
5.4.220.0200.05318.76
5.4.210.0370.03318.51
5.4.200.0200.05016.45
5.4.190.0100.06018.72
5.4.180.0170.05018.61
5.4.170.0200.05018.47
5.4.160.0070.06018.70
5.4.150.0130.05718.71
5.4.140.0170.05016.26
5.4.130.0100.05016.15
5.4.120.0170.05016.04
5.4.110.0170.05016.26
5.4.100.0130.05716.04
5.4.90.0170.05316.12
5.4.80.0270.05316.15
5.4.70.0300.05016.23
5.4.60.0170.04716.13
5.4.50.0100.05316.13
5.4.40.0100.05316.12
5.4.30.0330.04716.05
5.4.20.0130.05316.11
5.4.10.0130.05016.24
5.4.00.0070.06015.68
5.3.290.0130.07314.64
5.3.280.0170.06714.58
5.3.270.0270.06714.70
5.3.260.0170.05714.63
5.3.250.0200.04714.58
5.3.240.0230.04714.70
5.3.230.0330.05314.52
5.3.220.0170.05714.66
5.3.210.0170.05314.64
5.3.200.0230.04014.52
5.3.190.0170.05714.48
5.3.180.0130.05314.59
5.3.170.0170.04714.61
5.3.160.0100.06014.66
5.3.150.0130.05314.54
5.3.140.0270.04014.55
5.3.130.0100.05714.60
5.3.120.0130.05314.53
5.3.110.0200.04714.47
5.3.100.0100.05713.96
5.3.90.0130.05313.98
5.3.80.0200.04714.02
5.3.70.0170.05013.97
5.3.60.0100.06013.99
5.3.50.0170.05314.04
5.3.40.0130.05313.87
5.3.30.0200.04314.00
5.3.20.0130.05313.58
5.3.10.0200.04713.64
5.3.00.0130.05313.74
5.2.170.0200.03311.09
5.2.160.0200.03011.30
5.2.150.0130.04011.09
5.2.140.0170.03711.09
5.2.130.0130.04011.08
5.2.120.0230.02711.24
5.2.110.0030.04711.16
5.2.100.0100.04011.11
5.2.90.0200.03311.08
5.2.80.0070.04311.14
5.2.70.0170.03711.03
5.2.60.0170.04311.03
5.2.50.0170.04011.07
5.2.40.0070.04711.03
5.2.30.0130.03711.00
5.2.20.0130.03711.00
5.2.10.0170.03710.94
5.2.00.0100.04710.71
5.1.60.0070.03710.05
5.1.50.0100.03710.01
5.1.40.0030.0409.99
5.1.30.0070.04010.46
5.1.20.0130.04010.49
5.1.10.0200.04010.11
5.1.00.0070.04010.08
5.0.50.0130.0238.61
5.0.40.0100.0308.43
5.0.30.0070.0438.23
5.0.20.0030.0308.38
5.0.10.0100.0278.24
5.0.00.0030.0478.23
4.4.90.0030.0235.93
4.4.80.0030.0235.91
4.4.70.0100.0205.89
4.4.60.0070.0235.86
4.4.50.0070.0205.82
4.4.40.0070.0335.91
4.4.30.0070.0205.94
4.4.20.0130.0135.87
4.4.10.0030.0235.97
4.4.00.0100.0305.93
4.3.110.0030.0235.75
4.3.100.0130.0135.81
4.3.90.0030.0235.88
4.3.80.0100.0305.77
4.3.70.0030.0205.79
4.3.60.0100.0175.79
4.3.50.0030.0235.80
4.3.40.0030.0375.75
4.3.30.0030.0234.58
4.3.20.0100.0174.60
4.3.10.0030.0234.47
4.3.00.0070.0236.92

preferences:
40.39 ms | 401 KiB | 5 Q