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( $k => 'zeronull', 'name' => 'c' ); var_dump($a); var_dump($b); var_dump($c); var_dump(array_merge($a, $b)); var_dump(array_merge($a, $c)); var_dump(array_merge($a, $b, $c));

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)
8.3.60.0030.01718.31
8.3.50.0120.00721.14
8.3.40.0150.00318.63
8.3.30.0070.00718.92
8.3.20.0040.00420.33
8.3.10.0060.00321.97
8.3.00.0050.00320.39
8.2.180.0160.00416.75
8.2.170.0070.00722.96
8.2.160.0110.00419.21
8.2.150.0030.00524.18
8.2.140.0040.00424.66
8.2.130.0000.00826.16
8.2.120.0060.00319.36
8.2.110.0070.00320.96
8.2.100.0060.00617.72
8.2.90.0050.00319.34
8.2.80.0040.00417.97
8.2.70.0000.00917.50
8.2.60.0000.00817.92
8.2.50.0040.00418.07
8.2.40.0000.00818.28
8.2.30.0000.00818.07
8.2.20.0000.00717.75
8.2.10.0000.00717.73
8.2.00.0090.00017.64
8.1.280.0100.00725.92
8.1.270.0060.00322.15
8.1.260.0000.00726.35
8.1.250.0000.00828.09
8.1.240.0040.00419.25
8.1.230.0060.00620.76
8.1.220.0080.00017.74
8.1.210.0040.00418.77
8.1.200.0000.00917.23
8.1.190.0040.00417.29
8.1.180.0040.00418.64
8.1.170.0050.00518.37
8.1.160.0000.00722.23
8.1.150.0030.00518.60
8.1.140.0040.00417.47
8.1.130.0050.00317.85
8.1.120.0040.00417.33
8.1.110.0050.00317.45
8.1.100.0070.00017.46
8.1.90.0070.00017.47
8.1.80.0000.00717.36
8.1.70.0070.00017.41
8.1.60.0060.00317.56
8.1.50.0070.00017.49
8.1.40.0000.00717.50
8.1.30.0000.00817.59
8.1.20.0040.00417.52
8.1.10.0030.00617.55
8.1.00.0060.00317.38
8.0.300.0000.00718.77
8.0.290.0000.00717.05
8.0.280.0000.00718.41
8.0.270.0050.00317.33
8.0.260.0030.00316.92
8.0.250.0000.00716.99
8.0.240.0000.00716.99
8.0.230.0000.00816.94
8.0.220.0000.00716.82
8.0.210.0000.00716.85
8.0.200.0070.00016.86
8.0.190.0070.00017.00
8.0.180.0030.00316.89
8.0.170.0000.00716.92
8.0.160.0030.00616.82
8.0.150.0000.00716.88
8.0.140.0040.00416.84
8.0.130.0030.00313.35
8.0.120.0020.00516.89
8.0.110.0000.00716.80
8.0.100.0040.00416.80
8.0.90.0070.00016.76
8.0.80.0040.01116.91
8.0.70.0040.00416.71
8.0.60.0000.00816.97
8.0.50.0070.00016.92
8.0.30.0120.00817.11
8.0.20.0110.01117.40
8.0.10.0000.00817.02
8.0.00.0130.00516.74
7.4.330.0000.00615.00
7.4.320.0030.00316.45
7.4.300.0030.00316.41
7.4.290.0070.00016.46
7.4.280.0050.00316.45
7.4.270.0030.00316.46
7.4.260.0070.00016.56
7.4.250.0040.00416.46
7.4.240.0020.00516.48
7.4.230.0030.00316.36
7.4.220.0060.01316.42
7.4.210.0080.00616.49
7.4.200.0000.00716.40
7.4.190.0000.00716.41
7.4.160.0130.00316.48
7.4.150.0110.00617.40
7.4.140.0120.00917.86
7.4.130.0160.00416.40
7.4.120.0100.00716.53
7.4.110.0130.00516.28
7.4.100.0120.00616.66
7.4.90.0080.01216.36
7.4.80.0120.00619.39
7.4.70.0070.01416.45
7.4.60.0100.00716.54
7.4.50.0080.00016.54
7.4.40.0060.00622.77
7.4.30.0060.01316.45
7.4.00.0070.00715.00
7.3.330.0000.00513.13
7.3.320.0050.00013.18
7.3.310.0030.00516.39
7.3.300.0040.00416.26
7.3.290.0060.00916.29
7.3.280.0110.00916.39
7.3.270.0090.00917.40
7.3.260.0110.00816.23
7.3.250.0140.00516.46
7.3.240.0100.01416.49
7.3.230.0060.01516.45
7.3.210.0140.00416.41
7.3.200.0090.00919.39
7.3.190.0070.01416.41
7.3.180.0090.00916.52
7.3.170.0090.01216.27
7.3.160.0070.01016.50
7.3.120.0090.00614.75
7.2.330.0150.00316.55
7.2.320.0080.01416.23
7.2.310.0110.00716.41
7.2.300.0150.00316.57
7.2.290.0080.01116.61
7.2.00.0040.01119.15
7.1.100.0060.00617.88
7.1.70.0000.00817.25
7.1.60.0100.01419.82
7.1.50.0100.01017.05
7.1.00.0000.03722.41
7.0.200.0000.00916.54
7.0.140.0100.07022.04
7.0.60.0070.04319.86
7.0.50.0070.06317.81
7.0.40.0030.08320.40
7.0.30.0170.05320.17
7.0.20.0230.07320.16
7.0.10.0030.06720.21
7.0.00.0030.04719.99
5.6.280.0000.07721.12
5.6.210.0100.07720.69
5.6.200.0070.03718.15
5.6.190.0100.08320.59
5.6.180.0330.07020.60
5.6.170.0230.05320.40
5.6.160.0030.08720.52
5.6.150.0070.07018.16
5.6.140.0030.06018.09
5.6.130.0100.07718.20
5.6.120.0070.08320.98
5.6.110.0070.04720.89
5.6.100.0100.04321.10
5.6.90.0100.07321.09
5.6.80.0130.04320.48
5.6.70.4570.03720.47
5.5.350.0030.08720.44
5.5.340.0030.04017.98
5.5.330.0070.07720.19
5.5.320.0200.07020.28
5.5.310.0200.04020.26
5.5.300.0070.07717.98
5.5.290.0030.04017.91
5.5.280.0100.07720.64
5.5.270.0070.03720.78
5.5.260.0100.07020.76
5.5.250.0030.08320.48
5.5.240.0030.03020.36
5.4.450.0800.06019.66
5.4.440.0770.06719.63
5.4.430.0100.06019.65
5.4.420.0230.04719.27
5.4.410.0270.05319.52
5.4.400.0300.05718.82
5.4.390.0300.05318.72
5.4.380.0270.05018.66
5.4.370.0130.06018.68
5.4.360.0200.04318.70
5.4.350.0070.06018.78
5.4.340.0100.05718.59
5.4.320.0080.03412.45
5.4.310.0100.03612.45
5.4.300.0080.03812.45
5.4.290.0060.04612.45
5.4.280.0050.04012.35
5.4.270.0070.04112.35
5.4.260.0130.04718.72
5.4.250.0070.06018.70
5.4.240.0100.05018.59
5.4.230.0130.06718.84
5.4.220.0170.05318.80
5.4.210.0030.05318.93
5.4.200.0130.04318.79
5.4.190.0100.07018.83
5.4.180.0130.07318.83
5.4.170.0100.05018.78
5.4.160.0200.05718.80
5.4.150.0130.04718.87
5.4.140.0100.05016.50
5.4.130.0070.05716.49
5.4.120.0100.07316.48
5.4.110.0030.05716.36
5.4.100.0130.04316.34
5.4.90.0000.08016.30
5.4.80.0070.06716.28
5.4.70.0100.04716.29
5.4.60.0130.05016.34
5.4.50.0130.06016.34
5.4.40.0170.04016.49
5.4.30.0100.05316.15
5.4.20.0170.04716.36
5.4.10.0070.06016.34
5.4.00.0030.05315.71
5.3.290.0110.04512.80
5.3.280.0170.04314.48
5.3.270.0100.05314.62
5.3.260.0200.04314.45
5.3.250.0130.05014.52
5.3.240.0000.06014.48
5.3.230.0100.06714.60
5.3.220.0070.05314.58
5.3.210.0130.07314.56
5.3.200.0130.04314.58
5.3.190.0070.05314.61
5.3.180.0200.04014.66
5.3.170.0130.04714.42
5.3.160.0030.06014.43
5.3.150.0000.05714.46
5.3.140.0100.06714.44
5.3.130.0070.05714.56
5.3.120.0100.05014.57
5.3.110.0130.04714.38
5.3.100.0130.04713.73
5.3.90.0030.05314.03
5.3.80.0100.05014.11
5.3.70.0100.05714.02
5.3.60.0070.05014.01
5.3.50.0130.06313.96
5.3.40.0070.05313.82
5.3.30.0130.06314.00
5.3.20.0100.05013.84
5.3.10.0030.05713.74
5.3.00.0070.05013.68
5.2.170.0130.03711.15
5.2.160.0030.04311.25
5.2.150.0070.04311.16
5.2.140.0230.03011.25
5.2.130.0100.05311.21
5.2.120.0070.05711.20
5.2.110.0000.04310.98
5.2.100.0000.04311.10
5.2.90.0070.05711.10
5.2.80.0070.04011.02
5.2.70.0030.05311.10
5.2.60.0000.05711.05
5.2.50.0100.05710.94
5.2.40.0070.04311.14
5.2.30.0170.03010.73
5.2.20.0100.05011.07
5.2.10.0030.04310.84
5.2.00.0030.06010.79
5.1.60.0070.03010.02
5.1.50.0100.03710.09
5.1.40.0100.03010.01
5.1.30.0030.03710.40
5.1.20.0070.03710.42
5.1.10.0030.03710.21
5.1.00.0070.0339.99
5.0.50.0070.0338.50
5.0.40.0070.0338.46
5.0.30.0030.0438.41
5.0.20.0070.0238.10
5.0.10.0100.0278.25
5.0.00.0100.0378.21
4.4.90.0070.0307.60
4.4.80.0000.0237.60
4.4.70.0070.0207.60
4.4.60.0070.0277.60
4.4.50.0070.0177.60
4.4.40.0070.0377.60
4.4.30.0070.0177.60
4.4.20.0000.0237.60
4.4.10.0030.0237.60
4.4.00.0000.0437.60
4.3.110.0070.0237.60
4.3.100.0000.0337.60
4.3.90.0070.0207.60
4.3.80.0030.0477.60
4.3.70.0070.0177.60
4.3.60.0030.0207.60
4.3.50.0100.0207.60
4.3.40.0030.0337.60
4.3.30.0000.0237.60
4.3.20.0030.0207.60
4.3.10.0030.0307.60
4.3.00.0000.0277.67

preferences:
41.71 ms | 401 KiB | 5 Q