3v4l.org

run code in 300+ PHP versions simultaneously
<?php $false = false; $test = array(); $test['parent'] = array(); $test['parent']['child'] = 'foo'; var_dump(isset($test['parent']['child'])); $test['parent'][$false] = 'bar'; var_dump(isset($test['parent']['child'])); var_dump($test);

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)
8.3.60.0070.00716.75
8.3.50.0150.00717.31
8.3.40.0130.00318.45
8.3.30.0090.00618.58
8.3.20.0040.00418.79
8.3.10.0060.00320.57
8.3.00.0060.00319.38
8.2.180.0110.00716.63
8.2.170.0140.00722.96
8.2.160.0080.00820.69
8.2.150.0000.00824.18
8.2.140.0000.00824.66
8.2.130.0140.00026.16
8.2.120.0030.00518.92
8.2.110.0060.00319.16
8.2.100.0080.00417.91
8.2.90.0060.00319.11
8.2.80.0040.00419.25
8.2.70.0060.00317.63
8.2.60.0040.00418.05
8.2.50.0040.00418.07
8.2.40.0060.00618.08
8.2.30.0040.00418.04
8.2.20.0060.00319.31
8.2.10.0000.00817.65
8.2.00.0070.00017.73
8.1.280.0070.00725.92
8.1.270.0080.00023.99
8.1.260.0000.00726.35
8.1.250.0070.00728.09
8.1.240.0100.00322.01
8.1.230.0080.00420.93
8.1.220.0040.00418.77
8.1.210.0040.00418.99
8.1.200.0060.00317.35
8.1.190.0040.00417.65
8.1.180.0050.00318.10
8.1.170.0080.00018.85
8.1.160.0040.00418.82
8.1.150.0080.00018.57
8.1.140.0070.00017.37
8.1.130.0030.00517.77
8.1.120.0030.00317.29
8.1.110.0050.00317.34
8.1.100.0040.00417.27
8.1.90.0050.00217.29
8.1.80.0020.00517.31
8.1.70.0040.00417.29
8.1.60.0030.00617.54
8.1.50.0040.00417.28
8.1.40.0000.00717.43
8.1.30.0040.00417.46
8.1.20.0000.00717.42
8.1.10.0060.00317.41
8.1.00.0050.00317.32
8.0.300.0040.00419.86
8.0.290.0030.00616.63
8.0.280.0030.00318.36
8.0.270.0000.00717.14
8.0.260.0000.00716.79
8.0.250.0070.00016.88
8.0.240.0000.00816.79
8.0.230.0070.00016.86
8.0.220.0070.00016.69
8.0.210.0030.00316.72
8.0.200.0040.00416.75
8.0.190.0070.00016.83
8.0.180.0000.00716.83
8.0.170.0000.00816.67
8.0.160.0000.00716.77
8.0.150.0000.00816.81
8.0.140.0000.00716.83
8.0.130.0050.00013.30
8.0.120.0000.00816.66
8.0.110.0070.00016.80
8.0.100.0000.00816.88
8.0.90.0000.00716.93
8.0.80.0090.00616.75
8.0.70.0000.00716.69
8.0.60.0000.00716.68
8.0.50.0000.00716.87
8.0.30.0030.01316.70
8.0.20.0220.02016.93
8.0.10.0040.00416.73
8.0.00.0130.00816.78
7.4.330.0020.00213.03
7.4.320.0060.00016.43
7.4.300.0060.00016.43
7.4.290.0000.00716.45
7.4.280.0080.00016.57
7.4.270.0000.00716.46
7.4.260.0030.00313.23
7.4.250.0060.00316.44
7.4.240.0030.00316.42
7.4.230.0030.00316.42
7.4.220.0210.00516.59
7.4.210.0000.02016.46
7.4.200.0070.00016.37
7.4.190.0000.00816.43
7.4.160.0030.01916.37
7.4.150.0130.00616.40
7.4.140.0070.01016.37
7.4.130.0060.01116.38
7.4.120.0180.00016.39
7.4.110.0070.01016.55
7.4.100.0140.00316.36
7.4.90.0090.00916.49
7.4.80.0070.01416.32
7.4.70.0090.00616.38
7.4.60.0060.01016.34
7.4.50.0060.00016.26
7.4.40.0060.00616.34
7.4.30.0060.01016.41
7.4.00.0000.01614.67
7.3.330.0000.00613.15
7.3.320.0000.00613.03
7.3.310.0000.00716.30
7.3.300.0070.00016.24
7.3.290.0090.00716.29
7.3.280.0100.00616.22
7.3.270.0230.02316.41
7.3.260.0120.00616.22
7.3.250.0100.01416.30
7.3.240.0100.00616.64
7.3.230.0130.00516.59
7.3.210.0070.01016.25
7.3.200.0000.01719.39
7.3.190.0060.01316.63
7.3.180.0110.00416.24
7.3.170.0090.01216.48
7.3.160.0040.01216.49
7.3.120.0070.01014.81
7.2.330.0090.00916.31
7.2.320.0110.01516.82
7.2.310.0030.02016.75
7.2.300.0100.01316.42
7.2.290.0100.00616.84
7.2.60.0030.00716.74
7.2.00.0040.00819.41
7.1.200.0070.00715.85
7.1.70.0000.00917.23
7.1.60.0120.00919.30
7.1.50.0100.00716.88
7.1.00.0000.07022.31
7.0.200.0200.00714.83
7.0.140.0070.07021.96
7.0.120.0030.07722.02
7.0.60.0200.07721.83
7.0.50.0000.04317.84
7.0.40.0030.04319.95
7.0.30.0200.04320.18
7.0.20.0200.06320.16
7.0.10.0100.08320.13
7.0.00.0030.08720.03
5.6.280.0100.06320.80
5.6.210.0130.07020.71
5.6.200.0100.08318.12
5.6.190.0100.03720.48
5.6.180.0370.07020.41
5.6.170.0400.06320.52
5.6.160.0100.04020.49
5.6.150.0000.04318.22
5.6.140.0130.08018.11
5.6.130.0000.05318.11
5.6.120.0000.09021.09
5.6.110.0100.08021.02
5.6.100.0170.07720.88
5.6.90.0030.08321.09
5.6.80.0130.07320.41
5.5.350.0200.08020.32
5.5.340.0030.04317.92
5.5.330.0100.07020.28
5.5.320.0270.05020.25
5.5.310.0270.05720.32
5.5.300.0030.04017.88
5.5.290.0170.04717.96
5.5.280.0130.07720.79
5.5.270.0070.08720.79
5.5.260.0070.07020.87
5.5.250.0130.08020.61
5.5.240.0270.07320.14
5.4.450.0170.04019.33
5.4.440.0200.07019.48
5.4.430.0100.04319.13
5.4.420.0070.07719.29
5.4.410.0130.07019.35
5.4.400.0030.05319.15
5.4.390.0070.04719.00
5.4.380.0030.07318.91
5.4.370.0130.07018.94
5.4.360.0070.05319.08
5.4.350.0070.06319.10
5.4.340.0130.03019.18
5.4.320.0000.06719.16
5.4.310.0030.07718.79
5.4.300.0030.05718.91
5.4.290.0130.03019.14
5.4.280.0000.06019.18
5.4.270.0030.08018.91
5.4.260.0070.03719.07
5.4.250.0070.04718.78
5.4.240.0130.03319.17
5.4.230.0070.03719.15
5.4.220.0030.04318.78
5.4.210.0100.07318.78
5.4.200.0130.07018.79
5.4.190.0030.05319.16
5.4.180.0030.07719.14
5.4.170.0070.05019.14
5.4.160.0030.07718.78
5.4.150.0130.06719.15
5.4.140.0070.05016.34
5.4.130.0200.03316.21
5.4.120.0030.05316.24
5.4.110.0030.07316.61
5.4.100.0100.04316.34
5.4.90.0100.03716.41
5.4.80.0100.03716.35
5.4.70.0070.04316.21
5.4.60.0030.04316.40
5.4.50.0000.04316.20
5.4.40.0130.05716.30
5.4.30.0100.03716.36
5.4.20.0030.03716.22
5.4.10.0130.06316.36
5.4.00.0070.07715.78
5.3.290.0030.08714.54
5.3.280.0070.07714.56
5.3.270.0100.04314.57
5.3.260.0130.07014.55
5.3.250.0030.07714.53
5.3.240.0070.04014.50
5.3.230.0130.07714.53
5.3.220.0130.03714.49
5.3.210.0100.07314.50
5.3.200.0070.07314.46
5.3.190.0070.04014.52
5.3.180.0000.05714.48
5.3.170.0030.05314.57
5.3.160.0070.05014.48
5.3.150.0030.04014.49
5.3.140.0130.07314.47
5.3.130.0100.05714.63
5.3.120.0130.03714.49
5.3.110.0130.07314.64
5.3.100.0100.03713.96
5.3.90.0100.05013.80
5.3.80.0030.05313.98
5.3.70.0100.07013.96
5.3.60.0100.06713.95
5.3.50.0000.07313.78
5.3.40.0030.07013.77
5.3.30.0000.06013.87
5.3.20.0070.03713.61
5.3.10.0030.07313.61
5.3.00.0100.06713.56
5.2.170.0030.06710.97
5.2.160.0030.04011.04
5.2.150.0030.04711.05
5.2.140.0030.04011.13
5.2.130.0070.06011.00
5.2.120.0030.07010.96
5.2.110.0030.03311.04
5.2.100.0070.04311.08
5.2.90.0030.05711.25
5.2.80.0070.03711.09
5.2.70.0030.06311.18
5.2.60.0070.04710.98
5.2.50.0100.06011.00
5.2.40.0030.04310.92
5.2.30.0030.06710.95
5.2.20.0030.03010.77
5.2.10.0070.06011.03
5.2.00.0070.02710.73
5.1.60.0030.0309.95
5.1.50.0030.02710.05
5.1.40.0100.0179.98
5.1.30.0000.04010.22
5.1.20.0030.02710.30
5.1.10.0030.03710.01
5.1.00.0070.0279.96
5.0.50.0030.0408.52
5.0.40.0030.0438.47
5.0.30.0170.0538.13
5.0.20.0000.0308.34
5.0.10.0000.0278.16
5.0.00.0000.0338.11
4.4.90.0000.0307.82
4.4.80.0000.0277.82
4.4.70.0030.0377.82
4.4.60.0100.0277.82
4.4.50.0000.0277.82
4.4.40.0070.0477.82
4.4.30.0030.0377.82
4.4.20.0070.0237.82
4.4.10.0030.0137.82
4.4.00.0070.0277.82
4.3.110.0030.0207.82
4.3.100.0000.0237.82
4.3.90.0070.0207.82
4.3.80.0000.0277.82
4.3.70.0030.0137.82
4.3.60.0000.0337.82
4.3.50.0130.0237.82
4.3.40.0070.0207.82
4.3.30.0000.0207.82
4.3.20.0000.0407.82
4.3.10.0030.0307.82
4.3.00.0030.0207.82

preferences:
49.55 ms | 400 KiB | 5 Q