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']));

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)
8.3.60.0140.00716.63
8.3.50.0140.00317.40
8.3.40.0090.01218.90
8.3.30.0070.01418.49
8.3.20.0120.00918.70
8.3.10.0040.01520.40
8.3.00.0070.00417.34
8.2.180.0120.00916.38
8.2.170.0120.00322.96
8.2.160.0130.00721.20
8.2.150.0030.00624.18
8.2.140.0140.00024.66
8.2.130.0070.00026.16
8.2.120.0040.00419.82
8.2.110.0060.00321.18
8.2.100.0070.00417.71
8.2.90.0030.00619.22
8.2.80.0040.00418.03
8.2.70.0060.00317.63
8.2.60.0060.00317.93
8.2.50.0090.00018.07
8.2.40.0040.00418.22
8.2.30.0050.00318.05
8.2.20.0070.00017.56
8.2.10.0040.00417.73
8.2.00.0050.00317.68
8.1.280.0140.00725.92
8.1.270.0070.00724.66
8.1.260.0040.00426.35
8.1.250.0000.00728.09
8.1.240.0080.00420.72
8.1.230.0000.01120.96
8.1.220.0080.00017.74
8.1.210.0030.00718.83
8.1.200.0000.01017.35
8.1.190.0000.00717.53
8.1.180.0030.00518.10
8.1.170.0070.00018.79
8.1.160.0000.00718.74
8.1.150.0040.00418.57
8.1.140.0060.00317.25
8.1.130.0070.00017.88
8.1.120.0000.00817.30
8.1.110.0070.00017.41
8.1.100.0040.00417.43
8.1.90.0000.00717.41
8.1.80.0080.00017.34
8.1.70.0000.00717.36
8.1.60.0080.00417.48
8.1.50.0030.00617.41
8.1.40.0020.00517.40
8.1.30.0040.00417.55
8.1.20.0000.00817.54
8.1.10.0000.00717.41
8.1.00.0030.00517.40
8.0.300.0050.00219.85
8.0.290.0040.00416.63
8.0.280.0060.00318.28
8.0.270.0040.00417.19
8.0.260.0000.00716.83
8.0.250.0000.00716.95
8.0.240.0040.00416.88
8.0.230.0050.00216.90
8.0.220.0000.00716.69
8.0.210.0080.00016.84
8.0.200.0040.00416.94
8.0.190.0070.00016.82
8.0.180.0040.00416.82
8.0.170.0000.00816.83
8.0.160.0030.00316.82
8.0.150.0070.00016.73
8.0.140.0030.00616.74
8.0.130.0000.00513.21
8.0.120.0040.00416.82
8.0.110.0030.00616.65
8.0.100.0000.00816.78
8.0.90.0030.00316.77
8.0.80.0090.00616.87
8.0.70.0070.00016.77
8.0.60.0040.00416.89
8.0.50.0040.00416.86
8.0.30.0110.01117.08
8.0.20.0100.01017.14
8.0.10.0000.00716.79
8.0.00.0100.00816.68
7.4.330.0030.00312.93
7.4.320.0030.00316.42
7.4.300.0000.00616.43
7.4.290.0070.00316.45
7.4.280.0000.00716.39
7.4.270.0030.00316.56
7.4.260.0030.00313.26
7.4.250.0080.00016.44
7.4.240.0070.00016.52
7.4.230.0000.00716.32
7.4.220.0000.02516.31
7.4.210.0060.00816.50
7.4.200.0040.00416.54
7.4.190.0000.00716.59
7.4.160.0110.00816.42
7.4.150.0110.00616.52
7.4.140.0060.01216.46
7.4.130.0090.01016.38
7.4.120.0080.01116.34
7.4.110.0080.00916.44
7.4.100.0100.00716.41
7.4.90.0060.01216.20
7.4.80.0160.00716.24
7.4.70.0120.00616.46
7.4.60.0100.00916.34
7.4.50.0000.00516.41
7.4.40.0080.00416.35
7.4.30.0120.00316.35
7.4.00.0040.01114.61
7.3.330.0070.00013.02
7.3.320.0000.00513.14
7.3.310.0050.00216.13
7.3.300.0030.00316.12
7.3.290.0040.01416.26
7.3.280.0070.01016.21
7.3.270.0110.00616.50
7.3.260.0160.00816.33
7.3.250.0120.01016.35
7.3.240.0080.00816.18
7.3.230.0160.00616.55
7.3.210.0100.00616.59
7.3.200.0120.00619.39
7.3.190.0100.01016.36
7.3.180.0060.01016.16
7.3.170.0100.00716.46
7.3.160.0150.00916.39
7.3.120.0080.00814.52
7.3.10.0030.01016.63
7.3.00.0030.01016.36
7.2.330.0030.01416.84
7.2.320.0100.01016.61
7.2.310.0130.00616.45
7.2.300.0130.00316.69
7.2.290.0100.00716.74
7.2.130.0040.00816.87
7.2.120.0000.00916.89
7.2.110.0030.00616.63
7.2.100.0070.00716.95
7.2.90.0040.00717.02
7.2.80.0060.00616.88
7.2.70.0060.00616.73
7.2.60.0030.01016.93
7.2.50.0040.00816.95
7.2.40.0080.00416.87
7.2.30.0140.00017.09
7.2.20.0090.00316.79
7.2.10.0100.00316.68
7.2.00.0070.00618.02
7.1.250.0030.00915.41
7.1.100.0090.00318.12
7.1.70.0040.00416.93
7.1.60.0100.01319.40
7.1.50.0090.01216.62
7.1.00.0030.07022.32
7.0.200.0070.00016.48
7.0.140.0000.07321.92
7.0.120.0000.07022.00
7.0.60.0070.07019.85
7.0.50.0130.07317.80
7.0.40.0030.08719.90
7.0.30.0200.07320.09
7.0.20.0230.04720.12
7.0.10.0070.08020.04
7.0.00.0000.05320.01
5.6.280.0030.07321.01
5.6.210.0070.06320.60
5.6.200.0100.07718.18
5.6.190.0070.04320.45
5.6.180.0370.06320.61
5.6.170.0230.04320.33
5.6.160.0070.07320.54
5.6.150.0030.05318.14
5.6.140.0030.08318.15
5.6.130.0030.05018.23
5.6.120.0070.08721.00
5.6.110.0170.07021.09
5.6.100.0100.08020.99
5.6.90.0100.07021.01
5.6.80.0170.07020.35
5.6.70.3830.03720.46
5.5.350.0030.04020.37
5.5.340.0070.08318.01
5.5.330.0070.04020.07
5.5.320.0400.05020.29
5.5.310.0170.05320.30
5.5.300.0070.07318.03
5.5.290.0070.07317.95
5.5.280.0100.06320.88
5.5.270.0070.03720.79
5.5.260.0200.07020.79
5.5.250.0070.05020.61
5.5.240.0200.03020.17
5.4.450.0000.04319.14
5.4.440.0030.06319.13
5.4.430.0070.03719.11
5.4.420.0130.07719.40
5.4.410.0170.07019.38
5.4.400.0000.07319.18
5.4.390.0070.07318.80
5.4.380.0030.05319.18
5.4.370.0070.07719.08
5.4.360.0030.08319.18
5.4.350.0070.06319.19
5.4.340.0070.05719.14
5.4.320.0100.07319.15
5.4.310.0100.04019.09
5.4.300.0000.04319.08
5.4.290.0030.08019.07
5.4.280.0030.03718.79
5.4.270.0000.04019.04
5.4.260.0030.07718.79
5.4.250.0030.07719.13
5.4.240.0070.04319.14
5.4.230.0130.03318.80
5.4.220.0100.05719.13
5.4.210.0070.03719.17
5.4.200.0100.08019.17
5.4.190.0070.07319.10
5.4.180.0070.07318.80
5.4.170.0130.05719.15
5.4.160.0070.08019.13
5.4.150.0070.06318.85
5.4.140.0200.06016.34
5.4.130.0130.07016.28
5.4.120.0070.05316.28
5.4.110.0100.07016.25
5.4.100.0100.04016.39
5.4.90.0070.06016.15
5.4.80.0000.07016.31
5.4.70.0070.06716.59
5.4.60.0030.05316.30
5.4.50.0030.03716.34
5.4.40.0030.03716.36
5.4.30.0100.03716.38
5.4.20.0030.05016.27
5.4.10.0070.07316.40
5.4.00.0030.05015.78
5.3.290.0070.03714.48
5.3.280.0070.05014.54
5.3.270.0070.07314.56
5.3.260.0100.07714.43
5.3.250.0030.06014.62
5.3.240.0100.07314.54
5.3.230.0130.06714.38
5.3.220.0100.07014.53
5.3.210.0030.07714.49
5.3.200.0100.05314.49
5.3.190.0100.03714.50
5.3.180.0030.08314.49
5.3.170.0170.06014.37
5.3.160.0000.04314.35
5.3.150.0070.07314.50
5.3.140.0070.07314.37
5.3.130.0000.08714.34
5.3.120.0070.07714.44
5.3.110.0000.05014.45
5.3.100.0100.06714.00
5.3.90.0030.05013.94
5.3.80.0030.04714.03
5.3.70.0000.06313.96
5.3.60.0130.07013.94
5.3.50.0100.06713.88
5.3.40.0070.07313.76
5.3.30.0100.04313.86
5.3.20.0000.04713.78
5.3.10.0070.06713.44
5.3.00.0100.04013.57
5.2.170.0000.05011.29
5.2.160.0030.06311.15
5.2.150.0070.04711.04
5.2.140.0070.06010.99
5.2.130.0000.03310.99
5.2.120.0130.05011.18
5.2.110.0030.06311.18
5.2.100.0100.02311.18
5.2.90.0000.04011.26
5.2.80.0030.06311.19
5.2.70.0070.04311.08
5.2.60.0070.02710.94
5.2.50.0070.06310.95
5.2.40.0030.06710.98
5.2.30.0030.06310.90
5.2.20.0070.05011.13
5.2.10.0030.05310.86
5.2.00.0030.05710.70
5.1.60.0030.02310.03
5.1.50.0030.03710.07
5.1.40.0100.0339.92
5.1.30.0070.05010.32
5.1.20.0030.02710.34
5.1.10.0000.05010.04
5.1.00.0030.05010.12
5.0.50.0030.0208.69
5.0.40.0070.0278.55
5.0.30.0030.0538.28
5.0.20.0030.0278.20
5.0.10.0030.0308.15
5.0.00.0000.0338.12
4.4.90.0000.0277.91
4.4.80.0030.0377.91
4.4.70.0000.0237.91
4.4.60.0030.0177.91
4.4.50.0030.0177.91
4.4.40.0030.0577.91
4.4.30.0030.0337.91
4.4.20.0030.0237.91
4.4.10.0000.0277.91
4.4.00.0070.0207.91
4.3.110.0030.0337.91
4.3.100.0030.0337.91
4.3.90.0030.0307.91
4.3.80.0000.0277.91
4.3.70.0030.0277.91
4.3.60.0000.0237.91
4.3.50.0070.0237.91
4.3.40.0000.0537.91
4.3.30.0000.0177.91
4.3.20.0030.0337.91
4.3.10.0000.0377.91
4.3.00.0000.0337.91

preferences:
36.56 ms | 401 KiB | 5 Q