3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = array('a' => 1); var_dump($a['a']); var_dump(is_null($a['a'])); var_dump(isset($a['a'])); var_dump(isset($a['b'])); ?>

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)
8.3.70.0150.00718.30
8.3.60.0110.00316.75
8.3.50.0070.01321.03
8.3.40.0150.00318.90
8.3.30.0140.00018.67
8.3.20.0060.00320.33
8.3.10.0080.00021.73
8.3.00.0050.00323.66
8.2.190.0110.00716.74
8.2.180.0100.01016.50
8.2.170.0060.00822.96
8.2.160.0100.00320.60
8.2.150.0080.00024.18
8.2.140.0000.00824.66
8.2.130.0040.00419.60
8.2.120.0070.00026.35
8.2.110.0090.00020.94
8.2.100.0110.00017.92
8.2.90.0060.00319.08
8.2.80.0040.00417.97
8.2.70.0040.00417.63
8.2.60.0030.00617.91
8.2.50.0000.00818.07
8.2.40.0030.00620.42
8.2.30.0040.00419.34
8.2.20.0040.00417.66
8.2.10.0040.00418.05
8.2.00.0050.00217.95
8.1.280.0090.01325.92
8.1.270.0070.00023.82
8.1.260.0050.00228.09
8.1.250.0050.00228.09
8.1.240.0090.00023.89
8.1.230.0060.00619.21
8.1.220.0000.00817.74
8.1.210.0040.00418.77
8.1.200.0060.00317.23
8.1.190.0000.00817.23
8.1.180.0000.00818.10
8.1.170.0030.00618.53
8.1.160.0000.00720.70
8.1.150.0000.00718.73
8.1.140.0080.00019.50
8.1.130.0000.00717.54
8.1.120.0000.00717.42
8.1.110.0070.00017.43
8.1.100.0040.00417.32
8.1.90.0040.00417.44
8.1.80.0040.00417.31
8.1.70.0040.00417.44
8.1.60.0000.00817.49
8.1.50.0000.00817.35
8.1.40.0030.00617.49
8.1.30.0040.00417.41
8.1.20.0080.00017.45
8.1.10.0040.00417.38
8.1.00.0050.00317.44
8.0.300.0070.00018.77
8.0.290.0000.00716.63
8.0.280.0030.00318.38
8.0.270.0000.00717.16
8.0.260.0040.00417.23
8.0.250.0030.00316.93
8.0.240.0030.00316.75
8.0.230.0080.00016.80
8.0.220.0040.00416.82
8.0.210.0000.00816.86
8.0.200.0000.00616.88
8.0.190.0040.00416.92
8.0.180.0040.00416.91
8.0.170.0060.00316.85
8.0.160.0030.00316.80
8.0.150.0040.00416.82
8.0.140.0000.00816.77
8.0.130.0000.00513.19
8.0.120.0080.00016.79
8.0.110.0000.00816.78
8.0.100.0070.00016.65
8.0.90.0040.00416.71
8.0.80.0120.00916.82
8.0.70.0070.00016.79
8.0.60.0050.00216.77
8.0.50.0050.00216.62
8.0.30.0060.00816.98
8.0.20.0070.01317.40
8.0.10.0040.00416.82
8.0.00.0080.01016.61
7.4.330.0050.00016.67
7.4.320.0000.00616.43
7.4.300.0030.00316.53
7.4.290.0030.00316.42
7.4.280.0030.00616.57
7.4.270.0000.00816.36
7.4.260.0030.00316.41
7.4.250.0000.00716.55
7.4.240.0040.00316.46
7.4.230.0030.00416.24
7.4.220.0090.00916.56
7.4.210.0110.00316.55
7.4.200.0030.00316.55
7.4.160.0080.00816.39
7.4.150.0030.01617.40
7.4.140.0080.01317.86
7.4.130.0080.00916.27
7.4.120.0100.00916.45
7.4.110.0090.00916.51
7.4.100.0070.01016.15
7.4.90.0100.00716.38
7.4.80.0100.00719.39
7.4.70.0090.00916.30
7.4.60.0140.00316.52
7.4.50.0090.00616.16
7.4.40.0150.00016.45
7.4.30.0120.00616.44
7.4.00.0100.00514.73
7.3.330.0000.00513.02
7.3.320.0000.00613.17
7.3.310.0040.00416.09
7.3.300.0060.00016.27
7.3.290.0050.01016.27
7.3.280.0090.00616.31
7.3.270.0150.00617.40
7.3.260.0150.00316.29
7.3.250.0110.00616.46
7.3.240.0090.00916.25
7.3.230.0110.01116.39
7.3.210.0130.00316.51
7.3.200.0140.00919.39
7.3.190.0060.01016.50
7.3.180.0070.01016.23
7.3.170.0070.01016.38
7.3.160.0060.00916.38
7.3.120.0070.01015.03
7.3.110.0030.01314.56
7.3.100.0000.00915.07
7.3.90.0030.01014.75
7.3.80.0000.01515.16
7.3.70.0070.00714.50
7.3.60.0130.00014.72
7.3.50.0030.00714.67
7.3.40.0030.00914.70
7.3.30.0030.00914.59
7.3.20.0070.00716.61
7.3.10.0000.01116.71
7.3.00.0110.00716.70
7.2.330.0070.01016.32
7.2.320.0070.01016.68
7.2.310.0070.01516.77
7.2.300.0160.00616.55
7.2.290.0080.00816.67
7.2.250.0060.01114.97
7.2.240.0000.01915.12
7.2.230.0070.01014.75
7.2.220.0060.00615.10
7.2.210.0150.00314.83
7.2.200.0030.01214.87
7.2.190.0080.00814.65
7.2.180.0040.00914.82
7.2.170.0130.00314.70
7.2.00.0040.01119.04
7.1.330.0100.00315.69
7.1.320.0120.00015.90
7.1.310.0070.00715.45
7.1.300.0110.00315.75
7.1.290.0030.01015.57
7.1.280.0060.00915.71
7.1.270.0040.00715.69
7.1.260.0030.00715.68
7.1.100.0230.00318.19
7.1.70.0000.00816.95
7.1.60.0070.01719.18
7.1.50.0110.01416.50
7.1.00.0000.08022.31
7.0.200.0000.00716.75
7.0.60.0100.07721.86
7.0.50.0070.04017.80
7.0.40.0100.08320.30
7.0.30.0330.07020.04
7.0.20.0300.05020.04
7.0.10.0000.05320.00
7.0.00.0030.04320.01
5.6.280.0030.06021.07
5.6.210.0100.07320.61
5.6.200.0070.03718.15
5.6.190.0070.08720.57
5.6.180.0570.07020.56
5.6.170.0300.05020.54
5.6.160.0070.08720.50
5.6.150.0030.05018.21
5.6.140.0070.08018.15
5.6.130.0030.04718.09
5.6.120.0030.04321.11
5.6.110.0030.08321.09
5.6.100.0100.06020.98
5.6.90.0070.04321.00
5.6.80.0100.07720.36
5.5.350.0230.07020.51
5.5.340.0030.06017.89
5.5.330.0130.06020.19
5.5.320.0300.06320.29
5.5.310.0100.05020.29
5.5.300.0030.08317.98
5.5.290.0030.08317.97
5.5.280.0170.06320.64
5.5.270.0000.04720.63
5.5.260.0000.04720.87
5.5.250.0170.07320.54
5.5.240.0100.08020.27

preferences:
26.19 ms | 401 KiB | 5 Q