3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = array('a' => null); var_dump(isset($a['a'])); var_dump(array_key_exists('a', $a));

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)
8.3.60.0040.01118.42
8.3.50.0130.00321.21
8.3.40.0110.00418.63
8.3.30.0050.00920.14
8.3.20.0050.00320.22
8.3.10.0070.00021.96
8.3.00.0040.00422.50
8.2.180.0070.00716.38
8.2.170.0030.01722.96
8.2.160.0100.00320.39
8.2.150.0060.00324.18
8.2.140.0110.01124.66
8.2.130.0070.00026.16
8.2.120.0040.00419.67
8.2.110.0090.00021.04
8.2.100.0080.00417.75
8.2.90.0070.00019.34
8.2.80.0080.00017.97
8.2.70.0050.00517.38
8.2.60.0040.00417.91
8.2.50.0040.00418.07
8.2.40.0040.00420.07
8.2.30.0030.00618.02
8.2.20.0050.00317.69
8.2.10.0040.00417.62
8.2.00.0040.00417.48
8.1.280.0170.00325.92
8.1.270.0070.01020.41
8.1.260.0050.00226.35
8.1.250.0040.00428.09
8.1.240.0100.00717.83
8.1.230.0070.00417.54
8.1.220.0040.00417.74
8.1.210.0000.01118.77
8.1.200.0000.01017.35
8.1.190.0040.00417.22
8.1.180.0030.00618.10
8.1.170.0060.00320.25
8.1.160.0040.00421.99
8.1.150.0040.00418.48
8.1.140.0050.00217.38
8.1.130.0070.00017.86
8.1.120.0040.00417.41
8.1.110.0030.00517.39
8.1.100.0000.00817.42
8.1.90.0070.00017.24
8.1.80.0000.00717.39
8.1.70.0050.00317.26
8.1.60.0080.00017.39
8.1.50.0050.00317.35
8.1.40.0080.00017.48
8.1.30.0000.00817.43
8.1.20.0030.00517.48
8.1.10.0040.00417.55
8.1.00.0000.00817.47
8.0.300.0000.00718.77
8.0.290.0000.00716.63
8.0.280.0030.00318.42
8.0.270.0030.00317.11
8.0.260.0000.00616.86
8.0.250.0030.00316.88
8.0.240.0000.00816.93
8.0.230.0000.00816.81
8.0.220.0000.00716.79
8.0.210.0030.00316.73
8.0.200.0030.00316.89
8.0.190.0080.00016.85
8.0.180.0050.00216.83
8.0.170.0000.00816.73
8.0.160.0030.00316.73
8.0.150.0070.00016.76
8.0.140.0050.00316.71
8.0.130.0000.00513.29
8.0.120.0000.00816.69
8.0.110.0040.00416.86
8.0.100.0040.00416.82
8.0.90.0070.00016.65
8.0.80.0100.00916.81
8.0.70.0040.00416.88
8.0.60.0020.00516.62
8.0.50.0070.00016.71
8.0.30.0110.00716.96
8.0.20.0090.01117.40
8.0.10.0040.00416.89
8.0.00.0130.00816.74
7.4.330.0000.00515.00
7.4.320.0000.00616.59
7.4.300.0000.00616.45
7.4.290.0070.00016.61
7.4.280.0000.00816.49
7.4.270.0000.00716.52
7.4.260.0030.00316.41
7.4.250.0080.00016.45
7.4.240.0000.00716.55
7.4.230.0060.00016.66
7.4.220.0100.00716.48
7.4.210.0070.00916.54
7.4.200.0000.00716.38
7.4.190.0080.00016.77
7.4.160.0150.00316.43
7.4.150.0060.01017.40
7.4.140.0110.01117.86
7.4.130.0090.01016.46
7.4.120.0110.00616.68
7.4.110.0070.01016.48
7.4.100.0120.00916.52
7.4.90.0100.00616.52
7.4.80.0070.01019.39
7.4.70.0060.01016.52
7.4.60.0120.00416.50
7.4.50.0020.00216.51
7.4.40.0130.00322.77
7.4.30.0070.01116.37
7.4.00.0040.00814.90
7.3.330.0050.00013.16
7.3.320.0070.00012.92
7.3.310.0000.00716.24
7.3.300.0070.00016.23
7.3.290.0060.01216.30
7.3.280.0070.00916.19
7.3.270.0120.00617.40
7.3.260.0130.00316.16
7.3.250.0060.01116.43
7.3.240.0150.00616.15
7.3.230.0060.01016.39
7.3.210.0140.00316.18
7.3.200.0090.01219.39
7.3.190.0060.01516.18
7.3.180.0100.00716.21
7.3.170.0050.01016.46
7.3.160.0030.01416.52
7.3.120.0040.00414.74
7.2.330.0130.01016.29
7.2.320.0150.00816.27
7.2.310.0120.01816.57
7.2.300.0080.00816.45
7.2.290.0090.00916.56
7.2.60.0040.00816.72
7.2.00.0080.00819.48
7.1.200.0110.00315.69
7.1.100.0030.00717.96
7.1.70.0000.00817.07
7.1.60.0070.00316.86
7.1.50.0130.00616.89
7.1.00.0070.03022.33
7.0.200.0030.00916.82
7.0.140.0070.07022.09
7.0.60.0170.07019.89
7.0.50.0030.05017.86
7.0.40.0100.08020.24
7.0.30.0130.05320.21
7.0.20.0170.06020.30
7.0.10.0400.06720.18
7.0.00.0030.04320.20
5.6.280.0100.06720.77
5.6.210.0030.07320.58
5.6.200.0100.08018.07
5.6.190.0130.05020.27
5.6.180.3300.04320.56
5.6.170.0170.04020.41
5.6.160.0070.04020.71
5.6.150.0100.07318.11
5.6.140.0030.05018.15
5.6.130.0070.08318.18
5.6.120.0030.04020.95
5.6.110.0100.05320.98
5.6.100.0170.06020.85
5.6.90.0070.06021.09
5.6.80.0130.07720.40
5.6.70.0130.07320.27
5.5.350.0130.07320.43
5.5.340.0070.05318.02
5.5.330.0130.06020.15
5.5.320.0300.07020.29
5.5.310.0400.07720.27
5.5.300.0070.07317.96
5.5.290.0070.08018.02
5.5.280.0070.03720.84
5.5.270.0000.04320.63
5.5.260.0030.08020.87
5.5.250.0100.07320.54
5.5.240.0070.07720.13
5.4.450.0070.06019.10
5.4.440.0930.05719.64
5.4.430.0930.07019.48
5.4.420.0500.05719.27
5.4.410.0430.06319.36
5.4.400.2900.07318.83
5.4.390.0400.08318.78
5.4.380.0300.04318.68
5.4.370.0100.05718.52
5.4.360.0100.05318.71
5.4.350.0100.03311.97
5.4.340.0030.04211.97
5.4.320.0090.04312.45
5.4.310.0040.04512.45
5.4.300.0040.04412.45
5.4.290.0070.04312.45
5.4.280.0050.03612.35
5.4.270.0060.04812.35
5.4.260.0050.03812.34
5.4.250.0130.06019.01
5.4.240.0100.07718.87
5.4.230.0100.06319.02
5.4.220.0100.05019.02
5.4.210.0030.05719.02
5.4.200.0100.05718.72
5.4.190.0100.05318.82
5.4.180.0100.06319.04
5.4.170.0100.05018.71
5.4.160.0130.06718.91
5.4.150.0100.05019.00
5.4.140.0070.05016.27
5.4.130.0000.07316.48
5.4.120.0030.06016.50
5.4.110.0130.04316.50
5.4.100.0070.04716.48
5.4.90.0100.04716.48
5.4.80.0100.04316.54
5.4.70.0130.04316.34
5.4.60.0000.06016.45
5.4.50.0070.04716.46
5.4.40.0070.04716.53
5.4.30.0170.04016.39
5.4.20.0030.05016.46
5.4.10.0170.04716.16
5.4.00.0070.04715.73
5.3.290.0060.03812.80
5.3.280.0070.05014.43
5.3.270.0070.07014.59
5.3.260.0070.06314.60
5.3.250.0030.05714.43
5.3.240.0100.04714.61
5.3.230.0030.05014.48
5.3.220.0100.04714.57
5.3.210.0100.05014.42
5.3.200.0030.05014.62
5.3.190.0070.05314.34
5.3.180.0030.05314.33
5.3.170.0130.04314.57
5.3.160.0070.04714.56
5.3.150.0070.05314.71
5.3.140.0070.05314.47
5.3.130.0170.05014.64
5.3.120.0170.04314.70
5.3.110.0000.05714.43
5.3.100.0030.05013.90
5.3.90.0030.05014.02
5.3.80.0230.05013.89
5.3.70.0130.04313.90
5.3.60.0030.07713.99
5.3.50.0070.05014.10
5.3.40.0030.05313.96
5.3.30.0130.06713.74
5.3.20.0100.04313.70
5.3.10.0130.05713.73
5.3.00.0030.05013.47
5.2.170.0100.04011.04
5.2.160.0000.04311.02
5.2.150.0130.05011.14
5.2.140.0070.04011.07
5.2.130.0070.03711.10
5.2.120.0000.04311.10
5.2.110.0030.04011.21
5.2.100.0070.03711.11
5.2.90.0030.04011.12
5.2.80.0000.04710.97
5.2.70.0030.04011.10
5.2.60.0000.04310.81
5.2.50.0070.03710.94
5.2.40.0000.04711.14
5.2.30.0070.03711.12
5.2.20.0070.03711.06
5.2.10.0030.04010.93
5.2.00.0070.04010.47
5.1.60.0030.0409.84
5.1.50.0170.03710.14
5.1.40.0070.03010.16
5.1.30.0100.04310.43
5.1.20.0100.03010.28
5.1.10.0000.03710.02
5.1.00.0030.03310.00
5.0.50.0130.0208.40
5.0.40.0030.0278.34
5.0.30.0100.0378.12
5.0.20.0000.0308.42
5.0.10.0030.0378.21
5.0.00.0030.0407.98
4.4.90.0070.0177.03
4.4.80.0030.0207.03
4.4.70.0000.0237.03
4.4.60.0070.0207.03
4.4.50.0000.0237.03
4.4.40.0030.0337.03
4.4.30.0070.0177.03
4.4.20.0000.0237.03
4.4.10.0000.0237.03
4.4.00.0070.0277.03
4.3.110.0070.0177.03
4.3.100.0070.0207.03
4.3.90.0070.0177.03
4.3.80.0070.0337.03
4.3.70.0070.0177.03
4.3.60.0000.0337.03
4.3.50.0030.0377.03
4.3.40.0000.0337.03
4.3.30.0000.0207.03
4.3.20.0030.0207.03
4.3.10.0030.0207.03
4.3.00.0130.0277.20

preferences:
49.09 ms | 401 KiB | 5 Q