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' ); $b = array( $k => 'zeronull', 'name' => 'b' ); var_dump($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)
8.3.60.0170.00718.18
8.3.50.0100.00821.15
8.3.40.0070.00718.79
8.3.30.0100.00719.07
8.3.20.0040.00420.16
8.3.10.0000.00921.82
8.3.00.0080.00020.59
8.2.180.0110.00717.00
8.2.170.0070.00722.96
8.2.160.0100.00719.21
8.2.150.0080.00024.18
8.2.140.0060.00324.66
8.2.130.0070.00026.16
8.2.120.0040.00419.36
8.2.110.0060.00322.20
8.2.100.0060.00619.64
8.2.90.0040.00419.22
8.2.80.0000.00817.97
8.2.70.0060.00317.63
8.2.60.0060.00318.05
8.2.50.0040.00418.07
8.2.40.0050.00318.28
8.2.30.0000.00817.96
8.2.20.0040.00417.63
8.2.10.0080.00017.83
8.2.00.0090.00017.82
8.1.280.0110.00425.92
8.1.270.0000.00722.19
8.1.260.0000.00826.35
8.1.250.0000.00728.09
8.1.240.0030.00623.89
8.1.230.0090.00319.08
8.1.220.0040.00417.74
8.1.210.0000.00818.77
8.1.200.0030.00717.36
8.1.190.0060.00317.41
8.1.180.0000.00818.76
8.1.170.0030.00618.51
8.1.160.0050.00222.17
8.1.150.0000.00818.61
8.1.140.0000.00717.41
8.1.130.0000.00717.77
8.1.120.0030.00317.38
8.1.110.0000.00817.42
8.1.100.0040.00417.31
8.1.90.0050.00317.29
8.1.80.0000.00817.42
8.1.70.0070.00017.26
8.1.60.0040.00417.56
8.1.50.0040.00417.53
8.1.40.0030.00617.58
8.1.30.0080.00017.64
8.1.20.0040.00417.61
8.1.10.0050.00317.49
8.1.00.0030.00517.52
8.0.300.0040.00418.77
8.0.290.0000.00817.05
8.0.280.0040.00318.41
8.0.270.0040.00417.13
8.0.260.0030.00316.73
8.0.250.0000.00717.00
8.0.240.0080.00016.95
8.0.230.0070.00016.94
8.0.220.0040.00316.95
8.0.210.0030.00316.86
8.0.200.0040.00416.85
8.0.190.0000.00816.97
8.0.180.0000.00716.98
8.0.170.0000.00716.88
8.0.160.0000.00816.92
8.0.150.0050.00316.70
8.0.140.0000.00716.81
8.0.130.0030.00313.35
8.0.120.0050.00316.97
8.0.110.0070.00016.81
8.0.100.0040.00416.80
8.0.90.0000.00816.71
8.0.80.0040.01216.83
8.0.70.0040.00416.82
8.0.60.0040.00416.70
8.0.50.0040.00416.79
8.0.30.0090.01017.01
8.0.20.0080.01317.40
8.0.10.0000.00917.14
8.0.00.0120.01016.72
7.4.330.0000.00615.00
7.4.320.0070.00016.39
7.4.300.0030.00316.54
7.4.290.0070.00016.46
7.4.280.0060.00316.59
7.4.270.0030.00316.55
7.4.260.0000.00716.41
7.4.250.0060.00316.50
7.4.240.0040.00316.47
7.4.230.0000.00716.37
7.4.220.0170.00716.38
7.4.210.0100.00616.53
7.4.200.0000.00716.64
7.4.190.0030.00316.56
7.4.160.0120.00316.31
7.4.150.0120.00617.40
7.4.140.0090.00917.86
7.4.130.0110.01016.43
7.4.120.0140.00416.51
7.4.110.0100.00716.46
7.4.100.0130.00616.56
7.4.90.0100.00616.46
7.4.80.0090.00919.39
7.4.70.0090.01516.60
7.4.60.0160.00516.48
7.4.50.0000.00816.49
7.4.40.0000.01422.77
7.4.30.0100.00716.52
7.4.00.0100.00715.14
7.3.330.0000.00513.15
7.3.320.0030.00313.09
7.3.310.0030.00316.31
7.3.300.0070.00016.38
7.3.290.0040.01116.34
7.3.280.0080.00816.30
7.3.270.0090.00917.40
7.3.260.0100.00716.52
7.3.250.0090.00916.34
7.3.240.0180.00616.57
7.3.230.0130.00616.41
7.3.210.0100.00716.39
7.3.200.0070.01019.39
7.3.190.0100.00716.34
7.3.180.0030.01316.43
7.3.170.0090.00916.39
7.3.160.0160.00016.32
7.3.120.0060.00914.64
7.2.330.0030.01516.55
7.2.320.0080.00816.55
7.2.310.0130.00316.50
7.2.300.0100.00716.50
7.2.290.0120.00416.66
7.2.00.0060.00919.35
7.1.100.0030.00818.17
7.1.70.0040.01116.96
7.1.60.0100.01319.82
7.1.50.0040.01516.93
7.1.00.0000.03722.51
7.0.200.0040.00416.81
7.0.140.0070.07022.09
7.0.60.0030.07719.75
7.0.50.0030.05717.81
7.0.40.0000.04720.31
7.0.30.0370.04320.16
7.0.20.0370.07720.34
7.0.10.0370.07020.12
7.0.00.0030.05020.14
5.6.280.0070.07321.07
5.6.210.0100.08020.69
5.6.200.0070.05318.11
5.6.190.0100.03720.43
5.6.180.3300.04020.33
5.6.170.0200.04320.38
5.6.160.0070.06020.61
5.6.150.0070.03718.18
5.6.140.0070.08318.12
5.6.130.0130.07718.15
5.6.120.0000.04721.01
5.6.110.0170.08720.97
5.6.100.0100.08020.95
5.6.90.0100.04321.06
5.6.80.0170.06320.37
5.6.70.3900.03320.38
5.5.350.0270.08020.30
5.5.340.0130.07717.93
5.5.330.0070.04320.37
5.5.320.0330.06720.28
5.5.310.0200.09020.34
5.5.300.0030.04718.03
5.5.290.0070.08717.96
5.5.280.0100.04020.65
5.5.270.0000.05020.87
5.5.260.0070.08720.83
5.5.250.0130.07320.66
5.5.240.0070.07320.15
5.4.450.0830.05319.49
5.4.440.0830.06319.63
5.4.430.0770.04319.40
5.4.420.0670.06319.27
5.4.410.0070.06019.50
5.4.400.0300.05718.63
5.4.390.0230.05718.50
5.4.380.0330.05018.75
5.4.370.0170.05018.65
5.4.360.0200.04718.63
5.4.350.0170.05018.69
5.4.340.0170.04718.57
5.4.320.0080.04312.46
5.4.310.0040.04012.45
5.4.300.0070.04212.45
5.4.290.0050.04812.45
5.4.280.0080.03712.35
5.4.270.0100.03212.35
5.4.260.0100.05718.93
5.4.250.0270.06018.93
5.4.240.0100.06318.91
5.4.230.0170.06318.83
5.4.220.0070.07018.64
5.4.210.0130.04718.87
5.4.200.0030.05318.98
5.4.190.0130.04318.82
5.4.180.0030.05318.91
5.4.170.0070.05318.71
5.4.160.0170.04718.70
5.4.150.0230.04019.00
5.4.140.0100.04716.27
5.4.130.0000.05316.24
5.4.120.0130.06716.48
5.4.110.0030.06716.39
5.4.100.0070.05016.52
5.4.90.0130.06716.52
5.4.80.0070.05316.23
5.4.70.0070.05716.26
5.4.60.0030.05716.32
5.4.50.0030.05016.47
5.4.40.0070.05016.37
5.4.30.0100.04716.48
5.4.20.0000.05716.36
5.4.10.0100.06016.48
5.4.00.0130.04015.71
5.3.290.0050.03912.80
5.3.280.0100.06714.60
5.3.270.0000.06014.76
5.3.260.0130.04714.46
5.3.250.0130.06714.70
5.3.240.0100.04714.49
5.3.230.0000.05714.61
5.3.220.0170.04314.57
5.3.210.0030.06314.44
5.3.200.0070.05014.34
5.3.190.0130.05314.43
5.3.180.0070.05014.26
5.3.170.0000.06014.61
5.3.160.0130.04714.71
5.3.150.0130.04314.65
5.3.140.0030.05014.55
5.3.130.0130.04714.55
5.3.120.0100.05014.54
5.3.110.0000.05714.24
5.3.100.0130.04314.03
5.3.90.0130.06013.89
5.3.80.0100.05313.90
5.3.70.0070.05013.96
5.3.60.0100.04713.69
5.3.50.0130.04314.04
5.3.40.0070.06313.96
5.3.30.0170.05713.90
5.3.20.0070.06013.70
5.3.10.0000.05313.66
5.3.00.0100.04313.67
5.2.170.0170.03011.06
5.2.160.0030.04011.18
5.2.150.0030.04711.27
5.2.140.0100.05311.07
5.2.130.0000.05011.21
5.2.120.0130.05010.93
5.2.110.0100.03711.12
5.2.100.0070.04011.13
5.2.90.0070.03711.11
5.2.80.0070.04311.08
5.2.70.0000.04711.00
5.2.60.0030.04311.08
5.2.50.0130.05311.04
5.2.40.0130.03010.91
5.2.30.0070.04310.86
5.2.20.0070.04010.89
5.2.10.0100.03710.93
5.2.00.0100.03310.71
5.1.60.0070.0309.95
5.1.50.0030.04010.05
5.1.40.0100.03010.21
5.1.30.0100.04010.55
5.1.20.0100.04310.43
5.1.10.0100.0309.84
5.1.00.0100.04310.21
5.0.50.0030.0338.47
5.0.40.0030.0278.46
5.0.30.0000.0438.37
5.0.20.0000.0308.11
5.0.10.0030.0408.23
5.0.00.0070.0408.21
4.4.90.0070.0177.60
4.4.80.0000.0237.60
4.4.70.0030.0237.60
4.4.60.0030.0207.60
4.4.50.0070.0207.60
4.4.40.0100.0407.60
4.4.30.0000.0277.60
4.4.20.0030.0207.60
4.4.10.0030.0207.60
4.4.00.0030.0337.60
4.3.110.0070.0177.60
4.3.100.0030.0307.60
4.3.90.0070.0277.60
4.3.80.0030.0407.60
4.3.70.0000.0307.60
4.3.60.0070.0307.60
4.3.50.0000.0237.60
4.3.40.0100.0307.60
4.3.30.0000.0307.60
4.3.20.0030.0307.60
4.3.10.0070.0277.60
4.3.00.0130.0277.67

preferences:
52.56 ms | 400 KiB | 5 Q