3v4l.org

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

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)
8.4.20.0130.00717.50
8.4.10.0090.00019.71
8.3.150.0080.00016.34
8.3.140.0130.00616.67
8.3.130.0030.00618.30
8.3.120.0030.00618.90
8.3.110.0000.01020.94
8.3.100.0090.00624.06
8.3.90.0090.00026.77
8.3.80.0090.00017.97
8.3.70.0110.00416.50
8.3.60.0110.00716.63
8.3.50.0140.00322.69
8.3.40.0120.00318.68
8.3.30.0060.01018.65
8.3.20.0000.00821.73
8.3.10.0070.00023.67
8.3.00.0070.00319.66
8.2.260.0040.00420.66
8.2.250.0030.00516.77
8.2.240.0000.00817.29
8.2.230.0060.00322.58
8.2.220.0100.00037.54
8.2.210.0040.00426.77
8.2.200.0060.00318.07
8.2.190.0090.00618.39
8.2.180.0140.00716.75
8.2.170.0070.00722.96
8.2.160.0100.00320.51
8.2.150.0080.00024.18
8.2.140.0070.00024.66
8.2.130.0070.00722.11
8.2.120.0000.00726.16
8.2.110.0100.00020.53
8.2.100.0060.00618.09
8.2.90.0040.00419.25
8.2.80.0080.00017.97
8.2.70.0000.01417.63
8.2.60.0070.00317.80
8.2.50.0040.00418.10
8.2.40.0050.00322.25
8.2.30.0040.00419.18
8.2.20.0070.00317.68
8.2.10.0050.00318.11
8.2.00.0000.00718.00
8.1.310.0000.01016.72
8.1.300.0070.00318.00
8.1.290.0060.00330.84
8.1.280.0070.00725.92
8.1.270.0060.00323.88
8.1.260.0050.00226.35
8.1.250.0000.00728.09
8.1.240.0060.00322.20
8.1.230.0060.00617.70
8.1.220.0040.00417.74
8.1.210.0000.00818.77
8.1.200.0090.00017.34
8.1.190.0060.00317.23
8.1.180.0040.00418.10
8.1.170.0040.00418.24
8.1.160.0030.00622.12
8.1.150.0000.00720.83
8.1.140.0000.00719.47
8.1.130.0040.00417.32
8.1.120.0040.00417.46
8.1.110.0020.00517.23
8.1.100.0000.00717.23
8.1.90.0050.00217.23
8.1.80.0000.00817.19
8.1.70.0070.00017.34
8.1.60.0040.00417.49
8.1.50.0040.00417.40
8.1.40.0090.00317.41
8.1.30.0050.00317.47
8.1.20.0040.00417.42
8.1.10.0040.00417.41
8.1.00.0030.00617.41
8.0.300.0000.01018.77
8.0.290.0030.00616.58
8.0.280.0030.00318.23
8.0.270.0000.00817.14
8.0.260.0060.00016.60
8.0.250.0070.00016.86
8.0.240.0030.00316.82
8.0.230.0000.00716.69
8.0.220.0000.00816.63
8.0.210.0030.00316.74
8.0.200.0030.00616.80
8.0.190.0000.00716.69
8.0.180.0040.00416.67
8.0.170.0040.00416.84
8.0.160.0070.00016.84
8.0.150.0000.01016.72
8.0.140.0040.00416.64
8.0.130.0050.00013.22
8.0.120.0040.00416.71
8.0.110.0030.00516.72
8.0.100.0050.00316.69
8.0.90.0000.00816.77
8.0.80.0140.00716.74
8.0.70.0000.00716.65
8.0.60.0000.00716.79
8.0.50.0000.00716.56
8.0.30.0110.00817.01
8.0.20.0090.01217.40
8.0.10.0000.00716.68
8.0.00.0100.00716.50
7.4.330.0000.00515.08
7.4.320.0030.00316.55
7.4.300.0030.00316.54
7.4.290.0000.00616.55
7.4.280.0000.00816.57
7.4.270.0030.00316.29
7.4.260.0030.00316.39
7.4.250.0020.00516.36
7.4.240.0030.00316.46
7.4.230.0070.00016.23
7.4.220.0100.01016.36
7.4.210.0120.00316.63
7.4.200.0000.00916.44
7.4.160.0070.00916.39
7.4.150.0180.00017.40
7.4.140.0080.00917.86
7.4.130.0100.01016.48
7.4.120.0110.00816.37
7.4.110.0070.01016.39
7.4.100.0080.00816.37
7.4.90.0060.01016.44
7.4.80.0100.00719.39
7.4.70.0060.01216.58
7.4.60.0130.00316.45
7.4.50.0000.01416.57
7.4.40.0150.00416.45
7.4.30.0030.01316.27
7.4.00.0080.00814.77
7.3.330.0050.00013.17
7.3.320.0030.00313.01
7.3.310.0030.00316.07
7.3.300.0030.00316.20
7.3.290.0120.00516.26
7.3.280.0080.01216.25
7.3.270.0060.01217.40
7.3.260.0200.01616.45
7.3.250.0120.00716.25
7.3.240.0110.00716.49
7.3.230.0060.01016.39
7.3.210.0060.00916.46
7.3.200.0080.01116.12
7.3.190.0000.01716.29
7.3.180.0100.01016.36
7.3.170.0070.00716.19
7.3.160.0170.00616.31
7.2.330.0060.01116.49
7.2.320.0080.00816.25
7.2.310.0040.01516.38
7.2.300.0110.00816.63
7.2.290.0100.00716.68
7.2.60.0000.01316.59
7.1.200.0090.00615.71
7.1.70.0000.00816.86
7.1.60.0110.00715.45
7.1.00.0070.07022.31
7.0.200.0030.00716.71
7.0.90.0270.08020.10
7.0.80.0230.05319.95
7.0.70.0300.05720.04
7.0.60.0130.06019.97
7.0.50.0100.06320.37
7.0.40.0130.06320.25
7.0.30.0130.06320.31
7.0.20.0200.05020.31
7.0.10.0170.06320.44
7.0.00.0130.06320.35
5.6.240.0100.07320.81
5.6.230.0030.06720.60
5.6.220.0230.04320.59
5.6.210.0100.05720.68
5.6.200.0070.06721.09
5.6.190.0130.05321.11
5.6.180.0030.06721.12
5.6.170.0130.05321.08
5.6.160.0070.06021.02
5.6.150.0070.06721.02
5.6.140.0170.05321.17
5.6.130.0100.06321.09
5.6.120.0030.06721.01
5.6.110.0100.06021.11
5.6.100.0100.05721.00
5.6.90.0130.05721.05
5.6.80.0130.05020.46
5.6.70.0100.05320.50
5.6.60.0070.05720.42
5.6.50.0170.05320.48
5.6.40.0070.07320.55
5.6.30.0100.06020.55
5.6.20.0030.07720.41
5.6.10.0130.06720.34
5.6.00.0070.05720.47
5.5.380.0230.05720.41
5.5.370.0070.06020.50
5.5.360.0130.06720.43
5.5.350.0230.04720.39
5.5.340.0100.06720.96
5.5.330.0070.06320.78
5.5.320.0130.05720.88
5.5.310.0100.06020.85
5.5.300.0170.07720.85
5.5.290.0170.05320.88
5.5.280.0030.06720.93
5.5.270.0100.06720.96
5.5.260.0230.05020.83
5.5.250.0170.05320.71
5.5.240.0270.05020.33
5.5.230.0170.05020.25
5.5.220.0170.04720.07
5.5.210.0270.03720.30
5.5.200.0170.05720.31
5.5.190.0200.06020.28
5.5.180.0170.07320.05
5.5.160.0270.04320.28
5.5.150.0130.05020.23
5.5.140.0130.05020.27
5.5.130.0030.06020.20
5.5.120.0170.04720.25
5.5.110.0100.05720.14
5.5.100.0070.06020.22
5.5.90.0070.05720.22
5.5.80.0200.04720.04
5.5.70.0100.05720.20
5.5.60.0230.04720.12
5.5.50.0200.06720.21
5.5.40.0130.05720.11
5.5.30.0000.06020.20
5.5.20.0130.05020.13
5.5.10.0030.06320.07
5.5.00.0070.05720.08
5.4.450.0200.05319.54
5.4.440.0130.05319.19
5.4.430.0230.04719.35
5.4.420.0030.06019.37
5.4.410.0100.05319.22
5.4.400.0130.07019.19
5.4.390.0030.05719.08
5.4.380.0100.05319.18
5.4.370.0100.05319.07
5.4.360.0200.04019.09
5.4.350.0130.06719.18
5.4.340.0170.04719.12
5.4.320.0070.05719.21
5.4.310.0100.05018.86
5.4.300.0070.05019.09
5.4.290.0130.04719.16
5.4.280.0170.04719.21
5.4.270.0100.05019.10
5.4.260.0030.05719.07
5.4.250.0170.04319.07
5.4.240.0130.04719.20
5.4.230.0070.06019.20
5.4.220.0130.05019.18
5.4.210.0130.05719.02
5.4.200.0070.05319.02
5.4.190.0170.04719.16
5.4.180.0130.04319.07
5.4.170.0100.05019.02
5.4.160.0000.05719.01
5.4.150.0200.05019.04
5.4.140.0070.05716.24
5.4.130.0100.04316.21
5.4.120.0070.05016.39
5.4.110.0100.05016.23
5.4.100.0070.05716.27
5.4.90.0100.04716.29
5.4.80.0030.06716.25
5.4.70.0100.05016.47
5.4.60.0130.04316.42
5.4.50.0030.05316.41
5.4.40.0130.04316.38
5.4.30.0100.07016.44
5.4.20.0130.04316.48
5.4.10.0170.04316.26
5.4.00.0070.05015.85
5.3.290.0130.05714.58
5.3.280.0100.05014.43
5.3.270.0100.05314.52
5.3.260.0100.05314.58
5.3.250.0030.05714.57
5.3.240.0100.04714.55
5.3.230.0030.05714.59
5.3.220.0000.05714.36
5.3.210.0100.05014.45
5.3.200.0170.04314.49
5.3.190.0070.05314.50
5.3.180.0030.05714.52
5.3.170.0130.05014.52
5.3.160.0130.05714.36
5.3.150.0070.05014.36
5.3.140.0170.04314.48
5.3.130.0270.04714.42
5.3.120.0170.05014.41
5.3.110.0130.05314.45
5.3.100.0100.05013.98
5.3.90.0130.04713.96
5.3.80.0170.05713.94
5.3.70.0130.05713.95
5.3.60.0070.05013.93
5.3.50.0000.05313.86
5.3.40.0070.05013.75
5.3.30.0130.04013.82
5.3.20.0170.06013.54
5.3.10.0030.05013.64
5.3.00.0030.05013.55
5.2.170.0030.04311.06
5.2.160.0070.04010.94
5.2.150.0030.04310.94
5.2.140.0030.04311.01
5.2.130.0070.03711.02
5.2.120.0070.03711.02
5.2.110.0070.04010.95
5.2.100.0030.04010.93
5.2.90.0030.04011.05
5.2.80.0130.03311.05
5.2.70.0100.03711.02
5.2.60.0070.04011.05
5.2.50.0100.03311.07
5.2.40.0120.03510.94
5.2.30.0070.03710.96
5.2.20.0100.03310.88
5.2.10.0100.03310.92
5.2.00.0030.04010.63
5.1.60.0070.03010.02
5.1.50.0030.0339.97
5.1.40.0070.0339.97
5.1.30.0070.03710.29
5.1.20.0070.03310.30
5.1.10.0030.03710.01
5.1.00.0000.04010.05
5.0.50.0070.0278.54
5.0.40.0070.0238.44
5.0.30.0070.0408.16
5.0.20.0030.0338.19
5.0.10.0070.0238.15
5.0.00.0070.0408.10
4.4.90.0000.0235.76
4.4.80.0100.0135.75
4.4.70.0030.0205.75
4.4.60.0030.0205.77
4.4.50.0030.0205.80
4.4.40.0100.0275.73
4.4.30.0000.0235.75
4.4.20.0000.0235.82
4.4.10.0000.0335.82
4.4.00.0070.0305.81
4.3.110.0030.0235.67
4.3.100.0130.0175.71
4.3.90.0100.0175.72
4.3.80.0070.0305.71
4.3.70.0030.0205.66
4.3.60.0000.0235.66
4.3.50.0030.0235.68
4.3.40.0000.0335.63
4.3.30.0030.0205.37
4.3.20.0100.0175.37
4.3.10.0070.0175.37
4.3.00.0030.0205.37

preferences:
39.56 ms | 406 KiB | 6 Q