3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = array ('test' => 1, 'hello' => NULL, 'pie' => array('a' => 'apple')); unset($a['foo']); var_dump(isset($a['test'])); // TRUE var_dump(isset($a['foo'])); // FALSE var_dump(isset($a['hello'])); // FALSE

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)
8.3.60.0100.00716.63
8.3.50.0150.00522.83
8.3.40.0090.00618.71
8.3.30.0060.00918.84
8.3.20.0060.00320.20
8.3.10.0090.00023.69
8.3.00.0070.00319.38
8.2.180.0180.00416.48
8.2.170.0090.00622.96
8.2.160.0100.00320.35
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0140.00326.16
8.2.120.0060.00321.16
8.2.110.0060.00322.19
8.2.100.0120.00017.84
8.2.90.0080.00019.09
8.2.80.0050.00317.97
8.2.70.0080.00017.48
8.2.60.0030.00617.93
8.2.50.0050.00318.07
8.2.40.0050.00320.01
8.2.30.0040.00417.98
8.2.20.0040.00417.71
8.2.10.0000.00817.91
8.2.00.0070.00017.52
8.1.280.0110.00425.92
8.1.270.0060.00322.06
8.1.260.0040.00426.35
8.1.250.0070.00028.09
8.1.240.0060.00323.98
8.1.230.0070.00419.03
8.1.220.0080.00317.74
8.1.210.0030.00618.77
8.1.200.0030.00617.35
8.1.190.0080.00017.11
8.1.180.0080.00018.10
8.1.170.0030.00618.32
8.1.160.0000.00721.89
8.1.150.0040.00418.81
8.1.140.0040.00417.30
8.1.130.0000.00717.82
8.1.120.0070.00017.42
8.1.110.0030.00517.34
8.1.100.0050.00217.29
8.1.90.0070.00017.28
8.1.80.0000.00717.30
8.1.70.0060.00017.27
8.1.60.0060.00317.43
8.1.50.0040.00417.38
8.1.40.0000.00817.48
8.1.30.0040.00417.54
8.1.20.0000.00717.50
8.1.10.0040.00417.36
8.1.00.0040.00417.48
8.0.300.0070.00018.77
8.0.290.0040.00416.63
8.0.280.0030.00518.43
8.0.270.0030.00317.18
8.0.260.0000.00617.09
8.0.250.0070.00016.93
8.0.240.0000.00616.80
8.0.230.0040.00416.89
8.0.220.0060.00016.88
8.0.210.0030.00316.88
8.0.200.0030.00316.79
8.0.190.0080.00016.86
8.0.180.0070.00016.82
8.0.170.0030.00516.86
8.0.160.0000.00716.73
8.0.150.0000.00716.75
8.0.140.0000.00716.75
8.0.130.0060.00313.29
8.0.120.0000.00916.67
8.0.110.0000.00716.73
8.0.100.0070.00016.77
8.0.90.0040.00416.82
8.0.80.0130.00616.80
8.0.70.0000.00716.78
8.0.60.0050.00316.72
8.0.50.0000.00816.73
8.0.30.0070.01217.10
8.0.20.0160.00517.40
8.0.10.0000.00816.74
8.0.00.0110.01216.83
7.4.330.0000.00515.20
7.4.320.0030.00316.53
7.4.300.0000.00716.43
7.4.290.0030.00316.50
7.4.280.0040.00416.55
7.4.270.0050.00316.59
7.4.260.0000.00716.60
7.4.250.0040.00416.55
7.4.240.0030.00416.58
7.4.230.0040.00416.61
7.4.220.0100.00716.54
7.4.210.0110.00316.59
7.4.200.0070.00016.34
7.4.160.0060.00916.32
7.4.150.0120.01317.40
7.4.140.0080.01017.86
7.4.130.0110.00816.36
7.4.120.0050.01316.45
7.4.110.0100.00916.38
7.4.100.0120.00916.57
7.4.90.0130.00316.52
7.4.80.0130.00319.39
7.4.70.0060.00916.41
7.4.60.0100.01016.42
7.4.50.0000.00516.53
7.4.40.0070.01016.47
7.4.30.0100.00716.48
7.4.00.0070.01014.95
7.3.330.0030.00312.95
7.3.320.0000.00613.01
7.3.310.0020.00516.07
7.3.300.0000.00816.18
7.3.290.0060.01216.14
7.3.280.0050.01016.18
7.3.270.0070.01017.40
7.3.260.0100.01316.13
7.3.250.0130.00516.40
7.3.240.0090.00916.20
7.3.230.0100.00716.39
7.3.210.0100.00716.41
7.3.200.0110.00919.39
7.3.190.0070.01616.29
7.3.180.0070.00716.27
7.3.170.0070.01016.30
7.3.160.0120.00316.14
7.2.330.0070.01016.52
7.2.320.0090.00916.29
7.2.310.0070.01016.68
7.2.300.0100.00716.61
7.2.290.0060.00916.23
7.2.60.0030.01316.43
7.2.50.0160.01016.46
7.1.200.0100.00315.96
7.1.70.0040.00416.93
7.1.60.0070.01719.40
7.1.50.0100.01016.97
7.1.00.0000.07722.54
7.0.200.0400.00614.13
7.0.140.0000.07722.04
7.0.60.0130.08019.96
7.0.50.0100.07717.77
7.0.40.0100.08320.27
7.0.30.0300.06320.18
7.0.20.0170.04720.12
7.0.10.0000.09720.33
7.0.00.0130.07720.20
5.6.280.0000.07320.80
5.6.210.0100.08320.71
5.6.200.0030.07718.18
5.6.190.0100.08020.32
5.6.180.0400.07020.32
5.6.170.0270.06720.38
5.6.160.0070.08320.49
5.6.150.0100.03318.19
5.6.140.0100.03718.21
5.6.130.0100.08318.07
5.6.120.0030.05720.89
5.6.110.0030.09020.97
5.6.100.0070.08321.11
5.6.90.0170.07321.07
5.6.80.0100.03320.40
5.5.350.0130.04720.32
5.5.340.0100.04018.01
5.5.330.0030.08320.37
5.5.320.0200.03720.24
5.5.310.0170.04720.13
5.5.300.0030.06717.87
5.5.290.0130.05717.87
5.5.280.0030.09020.87
5.5.270.0270.06320.86
5.5.260.0000.04720.63
5.5.250.0030.08320.67
5.5.240.0070.07320.36
5.4.450.0230.08019.64
5.4.440.0630.05019.54
5.4.430.0470.06019.44
5.4.420.0100.05019.16
5.4.410.0000.06718.91
5.4.400.0470.07718.66
5.4.390.0330.07318.77
5.4.380.0130.04718.50
5.4.370.0070.03718.66
5.4.360.0070.04018.75
5.4.350.0080.03811.97
5.4.340.0090.04711.97
5.4.320.0060.04112.45
5.4.310.0030.03912.45
5.4.300.0040.04012.45
5.4.290.0040.03912.45
5.4.280.0050.03512.34
5.4.270.0040.03712.34
5.4.260.0050.03712.34
5.4.250.0040.03812.34
5.4.240.0040.03712.35
5.4.230.0020.04012.34
5.4.220.0050.03612.34
5.4.210.0050.03512.34
5.4.200.0050.03812.34
5.4.190.0100.03512.34
5.4.180.0030.03812.34
5.4.170.0070.04512.35
5.4.160.0100.04212.34
5.4.150.0020.03812.34
5.4.140.0040.03712.02
5.4.130.0060.03412.01
5.4.120.0050.04111.96
5.4.110.0080.03911.96
5.4.100.0090.03211.96
5.4.90.0040.03811.97
5.4.80.0040.03811.96
5.4.70.0030.03711.96
5.4.60.0050.03411.96
5.4.50.0060.03311.96
5.4.40.0040.03511.95
5.4.30.0030.03611.95
5.4.20.0050.03411.95
5.4.10.0060.03311.95
5.4.00.0040.03711.43
5.3.290.0060.03812.80
5.3.280.0060.03712.71
5.3.270.0040.04012.73
5.3.260.0050.03912.72
5.3.250.0080.03412.72
5.3.240.0060.03612.72
5.3.230.0050.03712.71
5.3.220.0020.03912.68
5.3.210.0070.03712.68
5.3.200.0020.04112.68
5.3.190.0040.04412.68
5.3.180.0100.03412.67
5.3.170.0030.03912.66
5.3.160.0070.03512.67
5.3.150.0050.03712.67
5.3.140.0060.03512.66
5.3.130.0070.03712.66
5.3.120.0060.03712.66
5.3.110.0060.03812.66
5.3.100.0050.03712.11
5.3.90.0060.03712.08
5.3.80.0040.04112.07
5.3.70.0060.03712.07
5.3.60.0070.03312.06
5.3.50.0050.03512.00
5.3.40.0040.03712.00
5.3.30.0050.03511.94
5.3.20.0040.03611.74
5.3.10.0070.03311.69
5.3.00.0050.03611.68
5.2.170.0050.0319.17
5.2.160.0120.0259.18
5.2.150.0020.0339.18
5.2.140.0080.0279.17
5.2.130.0040.0309.14
5.2.120.0050.0289.14
5.2.110.0120.0339.14
5.2.100.0070.0289.14
5.2.90.0050.0289.14
5.2.80.0030.0319.13
5.2.70.0030.0319.13
5.2.60.0040.0309.09
5.2.50.0040.0309.05
5.2.40.0030.0309.03
5.2.30.0070.0279.01
5.2.20.0040.0299.00
5.2.10.0090.0238.92
5.2.00.0070.0268.78
5.1.60.0060.0228.05
5.1.50.0030.0278.05
5.1.40.0020.0268.04
5.1.30.0060.0238.39
5.1.20.0090.0218.41
5.1.10.0040.0328.13
5.1.00.0050.0248.14
5.0.50.0000.0256.61
5.0.40.0030.0196.47
5.0.30.0010.0336.29
5.0.20.0050.0176.25
5.0.10.0050.0216.23
5.0.00.0040.0316.23
4.4.90.0020.0164.77
4.4.80.0060.0144.75
4.4.70.0010.0204.75
4.4.60.0030.0204.75
4.4.50.0010.0184.77
4.4.40.0050.0264.71
4.4.30.0040.0144.76
4.4.20.0000.0184.84
4.4.10.0050.0134.85
4.4.00.0030.0244.76
4.3.110.0030.0154.67
4.3.100.0030.0144.67
4.3.90.0020.0154.64
4.3.80.0010.0264.58
4.3.70.0040.0214.63
4.3.60.0010.0154.63
4.3.50.0020.0164.63
4.3.40.0010.0254.54
4.3.30.0010.0163.29
4.3.20.0040.0143.25
4.3.10.0030.0153.22
4.3.00.0030.0277.17

preferences:
43.61 ms | 401 KiB | 5 Q