3v4l.org

run code in 300+ PHP versions simultaneously
<?php $k = (string)"0"; $a = array( 'name' => 'a', $k => 'null' ); $b = array( 'name' => 'b', $k => 'zero' ); $c = array( 'name' => 'c' ); $c[$k] = 'zeronull'; var_dump($a); var_dump($b); var_dump(array_merge($a, $b)); var_dump(array_merge($a, $c)); var_dump(array_merge($a, $b, $c)); var_dump($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)
8.3.60.0100.01018.43
8.3.50.0130.00821.09
8.3.40.0120.00618.83
8.3.30.0030.01019.10
8.3.20.0080.00020.38
8.3.10.0060.00322.09
8.3.00.0000.00720.68
8.2.180.0130.00716.88
8.2.170.0140.00022.96
8.2.160.0070.00719.16
8.2.150.0080.00024.18
8.2.140.0040.00424.66
8.2.130.0050.00326.16
8.2.120.0050.00319.24
8.2.110.0040.00822.25
8.2.100.0060.00619.76
8.2.90.0050.00319.17
8.2.80.0000.00917.97
8.2.70.0030.00717.63
8.2.60.0070.00417.92
8.2.50.0040.00418.07
8.2.40.0000.00818.22
8.2.30.0050.00318.13
8.2.20.0000.00817.62
8.2.10.0030.00617.82
8.2.00.0060.00317.76
8.1.280.0060.00925.92
8.1.270.0000.00922.05
8.1.260.0050.00326.35
8.1.250.0080.00028.09
8.1.240.0060.00323.82
8.1.230.0040.00819.01
8.1.220.0040.00417.74
8.1.210.0000.00918.77
8.1.200.0090.00017.35
8.1.190.0000.00817.39
8.1.180.0000.00818.75
8.1.170.0030.00618.50
8.1.160.0040.00422.16
8.1.150.0000.00718.61
8.1.140.0040.00417.52
8.1.130.0000.00717.90
8.1.120.0070.00017.32
8.1.110.0050.00217.37
8.1.100.0040.00417.40
8.1.90.0000.00717.34
8.1.80.0050.00217.41
8.1.70.0070.00017.45
8.1.60.0080.00017.41
8.1.50.0020.00517.49
8.1.40.0000.00717.49
8.1.30.0030.00617.60
8.1.20.0030.00517.66
8.1.10.0000.00717.45
8.1.00.0020.00517.40
8.0.300.0040.00418.77
8.0.290.0070.00017.05
8.0.280.0000.00818.39
8.0.270.0030.00317.21
8.0.260.0030.00316.76
8.0.250.0030.00317.03
8.0.240.0080.00017.00
8.0.230.0070.00016.96
8.0.220.0040.00416.92
8.0.210.0030.00316.89
8.0.200.0070.00016.98
8.0.190.0030.00316.99
8.0.180.0080.00016.97
8.0.170.0040.00416.85
8.0.160.0030.00516.96
8.0.150.0070.00016.90
8.0.140.0000.00716.86
8.0.130.0030.00313.37
8.0.120.0000.00816.85
8.0.110.0050.00216.91
8.0.100.0040.00416.96
8.0.90.0000.00716.92
8.0.80.0090.00616.83
8.0.70.0040.00416.91
8.0.60.0000.00816.88
8.0.50.0040.00416.93
8.0.30.0100.01017.12
8.0.20.0140.00517.40
8.0.10.0000.00817.02
8.0.00.0080.01016.69
7.4.330.0020.00215.00
7.4.320.0030.00316.48
7.4.300.0030.00316.32
7.4.290.0040.00416.54
7.4.280.0000.00716.47
7.4.270.0030.00316.44
7.4.260.0040.00416.46
7.4.250.0070.00016.43
7.4.240.0000.00716.46
7.4.230.0030.00316.34
7.4.220.0100.00716.50
7.4.210.0080.01216.46
7.4.200.0000.00716.35
7.4.190.0040.00416.44
7.4.160.0090.01216.19
7.4.150.0060.01217.40
7.4.140.0030.01417.86
7.4.130.0110.01016.55
7.4.120.0120.00716.54
7.4.110.0070.01116.52
7.4.100.0110.01016.57
7.4.90.0140.00716.71
7.4.80.0100.01019.39
7.4.70.0060.01216.31
7.4.60.0120.00616.42
7.4.50.0030.00616.45
7.4.40.0070.00722.77
7.4.30.0120.00616.30
7.4.00.0040.01114.95
7.3.330.0000.00513.29
7.3.320.0030.00313.25
7.3.310.0000.00716.49
7.3.300.0000.00716.39
7.3.290.0130.00316.41
7.3.280.0060.00916.45
7.3.270.0070.01517.40
7.3.260.0190.01016.70
7.3.250.0090.01416.68
7.3.240.0100.01316.35
7.3.230.0130.00616.39
7.3.210.0120.00616.62
7.3.200.0100.00619.39
7.3.190.0070.01016.39
7.3.180.0110.00616.64
7.3.170.0100.00716.43
7.3.160.0130.00416.44
7.3.120.0090.00615.12
7.2.330.0070.01116.56
7.2.320.0140.00716.36
7.2.310.0090.00916.68
7.2.300.0120.00616.27
7.2.290.0090.01216.67
7.2.00.0060.00619.41
7.1.100.0050.00318.34
7.1.70.0000.00717.21
7.1.60.0070.00717.05
7.1.50.0120.00916.91
7.1.00.0070.05022.45
7.0.200.0020.00516.61
7.0.140.0030.07321.93
7.0.60.0070.07320.06
7.0.50.0100.04317.75
7.0.40.0070.04020.30
7.0.30.0470.06020.20
7.0.20.0330.05719.99
7.0.10.0270.08020.33
7.0.00.0070.05020.11
5.6.280.0030.07321.15
5.6.210.0070.07720.71
5.6.200.0030.06018.20
5.6.190.0170.03020.39
5.6.180.3630.05020.61
5.6.170.0270.08020.70
5.6.160.0000.09020.49
5.6.150.0070.03718.08
5.6.140.0070.08018.20
5.6.130.0070.04318.11
5.6.120.0030.06320.95
5.6.110.0100.08320.98
5.6.100.0130.07720.97
5.6.90.0030.08321.01
5.6.80.0070.08320.39
5.6.70.4170.03720.49
5.5.350.0230.06720.47
5.5.340.0100.08018.02
5.5.330.0000.09720.13
5.5.320.0300.07320.29
5.5.310.0230.04720.24
5.5.300.0030.08717.95
5.5.290.0100.07717.91
5.5.280.0030.04020.87
5.5.270.0100.05720.72
5.5.260.0070.06720.88
5.5.250.0230.05720.68
5.5.240.0070.06720.23
5.4.450.0370.05319.11
5.4.440.0170.06719.24
5.4.430.0130.08719.51
5.4.420.0270.04719.57
5.4.410.0100.06319.34
5.4.400.0500.06018.68
5.4.390.0400.05018.68
5.4.380.0300.04718.68
5.4.370.0130.05318.71
5.4.360.0170.05018.70
5.4.350.0170.05318.59
5.4.340.0230.04718.79
5.4.320.0100.03912.45
5.4.310.0060.04212.45
5.4.300.0080.04512.46
5.4.290.0050.04212.45
5.4.280.0050.04212.35
5.4.270.0080.04312.35
5.4.260.0100.05018.75
5.4.250.0100.07018.92
5.4.240.0130.04718.84
5.4.230.0070.07318.91
5.4.220.0070.06019.00
5.4.210.0070.06318.78
5.4.200.0100.05718.94
5.4.190.0070.05718.93
5.4.180.0130.06718.87
5.4.170.0270.05718.83
5.4.160.0100.05018.98
5.4.150.0070.06018.82
5.4.140.0030.08016.24
5.4.130.0200.04716.38
5.4.120.0100.06316.41
5.4.110.0200.05316.41
5.4.100.0200.05716.52
5.4.90.0130.04316.39
5.4.80.0030.05716.35
5.4.70.0070.04716.41
5.4.60.0130.04716.41
5.4.50.0070.05016.25
5.4.40.0070.07016.26
5.4.30.0100.04716.48
5.4.20.0200.03716.26
5.4.10.0130.06716.46
5.4.00.0030.05315.83
5.3.290.0070.04712.80
5.3.280.0130.05014.46
5.3.270.0130.05014.62
5.3.260.0170.05314.38
5.3.250.0000.06014.67
5.3.240.0070.06314.47
5.3.230.0030.06314.48
5.3.220.0030.05714.48
5.3.210.0170.06014.26
5.3.200.0100.06014.48
5.3.190.0030.05314.44
5.3.180.0030.05314.71
5.3.170.0030.05714.55
5.3.160.0030.05314.65
5.3.150.0100.06714.65
5.3.140.0070.05314.64
5.3.130.0000.06314.41
5.3.120.0030.05714.55
5.3.110.0070.05314.56
5.3.100.0100.05013.81
5.3.90.0100.04713.88
5.3.80.0100.04714.04
5.3.70.0070.05014.03
5.3.60.0170.04013.85
5.3.50.0130.04313.96
5.3.40.0170.04713.96
5.3.30.0100.06713.84
5.3.20.0200.05313.70
5.3.10.0100.06313.67
5.3.00.0130.04313.65
5.2.170.0070.04311.06
5.2.160.0070.04011.29
5.2.150.0170.03711.24
5.2.140.0100.05011.16
5.2.130.0130.04310.86
5.2.120.0100.03310.99
5.2.110.0030.04011.10
5.2.100.0030.04711.25
5.2.90.0130.05011.09
5.2.80.0030.04711.18
5.2.70.0130.04711.24
5.2.60.0130.06010.97
5.2.50.0100.06011.01
5.2.40.0100.03711.01
5.2.30.0130.05010.99
5.2.20.0130.05311.05
5.2.10.0030.04010.86
5.2.00.0130.04010.72
5.1.60.0030.0339.76
5.1.50.0000.03710.03
5.1.40.0100.0279.94
5.1.30.0000.04010.40
5.1.20.0100.03010.29
5.1.10.0170.02710.03
5.1.00.0030.0339.83
5.0.50.0070.0378.73
5.0.40.0030.0308.33
5.0.30.0030.0608.24
5.0.20.0030.0278.38
5.0.10.0000.0338.14
5.0.00.0000.0477.99
4.4.90.0030.0277.60
4.4.80.0070.0307.60
4.4.70.0030.0207.60
4.4.60.0100.0137.60
4.4.50.0030.0207.60
4.4.40.0030.0337.60
4.4.30.0070.0177.60
4.4.20.0070.0177.60
4.4.10.0030.0207.60
4.4.00.0030.0337.60
4.3.110.0070.0277.60
4.3.100.0030.0277.60
4.3.90.0070.0207.60
4.3.80.0030.0307.60
4.3.70.0030.0207.60
4.3.60.0030.0307.60
4.3.50.0030.0307.60
4.3.40.0030.0337.60
4.3.30.0070.0177.60
4.3.20.0030.0307.60
4.3.10.0000.0237.60
4.3.00.0100.0207.70

preferences:
40.98 ms | 401 KiB | 5 Q