3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = array('a' => 'a', 'b' => 'b' ); $b = array('a' => 'a_p', 'b' => 'b_p' ); $c = array_merge($a, $b); //$d = $a + $b; var_dump($c); //var_dump($d);

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
8.3.50.0120.00916.63
8.3.40.0120.00318.42
8.3.30.0110.00318.45
8.3.20.0000.00818.54
8.3.10.0030.00520.59
8.3.00.0080.00019.13
8.2.180.0070.01116.60
8.2.170.0070.00722.96
8.2.160.0070.00720.52
8.2.150.0080.00024.18
8.2.140.0050.00324.66
8.2.130.0040.00426.16
8.2.120.0090.00020.50
8.2.110.0120.00620.57
8.2.100.0080.00417.72
8.2.90.0040.00419.22
8.2.80.0000.00817.97
8.2.70.0040.00417.48
8.2.60.0060.00317.67
8.2.50.0040.00419.35
8.2.40.0080.00019.88
8.2.30.0090.00017.97
8.2.20.0030.00619.27
8.2.10.0000.00717.55
8.2.00.0060.00317.65
8.1.280.0070.01025.92
8.1.270.0070.00023.99
8.1.260.0040.00426.35
8.1.250.0000.00828.09
8.1.240.0030.00622.08
8.1.230.0040.00817.45
8.1.220.0000.00817.74
8.1.210.0000.00818.77
8.1.200.0040.00717.23
8.1.190.0040.00417.18
8.1.180.0040.00418.10
8.1.170.0080.00018.82
8.1.160.0050.00218.85
8.1.150.0000.00718.60
8.1.140.0000.00717.29
8.1.130.0050.00317.81
8.1.120.0000.00717.43
8.1.110.0070.00017.27
8.1.100.0000.00717.41
8.1.90.0030.00517.29
8.1.80.0000.00717.27
8.1.70.0000.00717.36
8.1.60.0080.00017.39
8.1.50.0060.00317.35
8.1.40.0050.00217.41
8.1.30.0040.00417.53
8.1.20.0070.00017.57
8.1.10.0000.00717.38
8.1.00.0040.00417.21
8.0.300.0040.00418.77
8.0.290.0070.00016.75
8.0.280.0060.00318.37
8.0.270.0030.00317.11
8.0.260.0000.00616.71
8.0.250.0040.00416.76
8.0.240.0040.00416.89
8.0.230.0000.00816.92
8.0.220.0040.00416.73
8.0.210.0000.00716.82
8.0.200.0100.00016.83
8.0.190.0040.00416.85
8.0.180.0030.00316.82
8.0.170.0000.00816.73
8.0.160.0000.00716.86
8.0.150.0000.00916.87
8.0.140.0030.00516.76
8.0.130.0030.00313.33
8.0.120.0000.00916.67
8.0.110.0040.00416.84
8.0.100.0000.00716.76
8.0.90.0030.00316.64
8.0.80.0080.00916.88
8.0.70.0040.00416.83
8.0.60.0040.00416.76
8.0.50.0040.00416.88
8.0.30.0060.01216.97
8.0.20.0150.00416.82
8.0.10.0000.00716.92
8.0.00.0080.01016.61
7.4.330.0000.00512.99
7.4.320.0060.00016.33
7.4.300.0070.00016.52
7.4.290.0070.00016.36
7.4.280.0000.00716.44
7.4.270.0000.00716.56
7.4.260.0030.00313.23
7.4.250.0000.00816.53
7.4.240.0030.00316.58
7.4.230.0070.00016.32
7.4.220.0070.01116.57
7.4.210.0050.00816.57
7.4.200.0030.00316.62
7.4.190.0040.00416.48
7.4.160.0070.01016.57
7.4.150.0070.01116.38
7.4.140.0070.01116.29
7.4.130.0140.00316.50
7.4.120.0140.00316.29
7.4.110.0060.01016.35
7.4.100.0070.01016.44
7.4.90.0150.00316.27
7.4.80.0090.01219.39
7.4.70.0130.00316.26
7.4.60.0070.01416.40
7.4.50.0030.00316.46
7.4.40.0120.00316.25
7.4.30.0100.00716.12
7.4.00.0050.00914.79
7.3.330.0030.00312.86
7.3.320.0050.00312.82
7.3.310.0070.00016.25
7.3.300.0070.00015.99
7.3.290.0070.00716.16
7.3.280.0110.00816.22
7.3.270.0180.00016.49
7.3.260.0080.00816.55
7.3.250.0070.01116.35
7.3.240.0130.00416.02
7.3.230.0100.00616.14
7.3.210.0130.00416.38
7.3.200.0080.00816.32
7.3.190.0170.00316.05
7.3.180.0090.00616.50
7.3.170.0060.00916.30
7.3.160.0100.00616.36
7.3.120.0040.01014.76
7.3.110.0070.01114.43
7.3.100.0090.00914.70
7.3.90.0120.00314.37
7.3.80.0060.00314.66
7.3.70.0080.00814.67
7.3.60.0100.01014.75
7.3.50.0070.00714.77
7.3.40.0030.01014.61
7.3.30.0040.01414.74
7.3.20.0060.01316.52
7.3.10.0150.00316.48
7.3.00.0000.01316.38
7.2.330.0090.00916.40
7.2.320.0200.00316.58
7.2.310.0160.00316.67
7.2.300.0030.01416.24
7.2.290.0100.00716.46
7.2.250.0070.01314.84
7.2.240.0030.01414.90
7.2.230.0070.00715.18
7.2.220.0070.01014.72
7.2.210.0070.00714.85
7.2.200.0080.00814.95
7.2.190.0060.00315.03
7.2.180.0000.01414.70
7.2.170.0090.00614.76
7.1.330.0000.01615.85
7.1.320.0060.01015.81
7.1.310.0000.01015.68
7.1.300.0090.00315.80
7.1.290.0000.01515.51
7.1.280.0080.00815.79
7.1.270.0090.00915.68
7.1.260.0000.01215.63
7.1.100.0070.00718.08
7.1.70.0040.00816.79
7.1.60.0090.01619.17
7.1.50.0040.01116.71
7.1.00.0000.08322.30
7.0.200.0220.00014.41
7.0.140.0030.07322.00
7.0.120.0100.06022.09
7.0.60.0070.05319.92
7.0.50.0030.06317.81
7.0.40.0130.07320.30
7.0.30.0270.08320.18
7.0.20.0200.04720.09
7.0.10.0200.04320.30
7.0.00.0100.07720.08
5.6.280.0000.07721.13
5.6.210.0100.04720.54
5.6.200.0130.07718.21
5.6.190.0030.06320.35
5.6.180.0400.07320.58
5.6.170.0330.04020.42
5.6.160.0130.03320.49
5.6.150.0170.07018.20
5.6.140.0200.06718.11
5.6.130.0070.08018.06
5.6.120.0030.08321.01
5.6.110.0070.08021.04
5.6.100.0070.07020.95
5.6.90.0130.05021.09
5.6.80.0100.08020.40
5.6.70.0200.03720.41
5.5.350.0400.05020.32
5.5.340.0030.08317.89
5.5.330.0130.07020.12
5.5.320.0170.04320.40
5.5.310.0230.07720.32
5.5.300.0030.06317.94
5.5.290.0070.03717.87
5.5.280.0070.04720.86
5.5.270.0030.04020.64
5.5.260.0030.06020.75
5.5.250.0030.08320.49
5.5.240.0030.05720.32
5.4.450.0030.06719.14
5.4.440.0170.07019.41
5.4.430.0170.06319.32
5.4.420.0130.04319.50
5.4.410.0070.05018.98
5.4.400.0100.07019.14
5.4.390.0070.05719.18
5.4.380.0100.03719.14
5.4.370.0070.04718.79
5.4.360.0030.08318.79
5.4.350.0070.06019.08
5.4.340.0070.08018.80
5.4.320.0070.06018.79
5.4.310.0070.07018.91
5.4.300.0100.07018.91
5.4.290.0100.03719.19
5.4.280.0000.05019.18
5.4.270.0030.07719.17
5.4.260.0170.06318.91
5.4.250.0100.06319.07
5.4.240.0000.08319.17
5.4.230.0100.07719.11
5.4.220.0030.05019.11
5.4.210.0070.04719.11
5.4.200.0030.06719.11
5.4.190.0100.07718.91
5.4.180.0030.04719.07
5.4.170.0030.04718.91
5.4.160.0000.05719.16
5.4.150.0030.05019.15
5.4.140.0000.06716.17
5.4.130.0030.07316.37
5.4.120.0000.07716.21
5.4.110.0070.04716.34
5.4.100.0070.04316.41
5.4.90.0100.06316.61
5.4.80.0000.06016.22
5.4.70.0070.06316.35
5.4.60.0070.05316.34
5.4.50.0070.07316.32
5.4.40.0030.03716.22
5.4.30.0070.07716.31
5.4.20.0100.03716.34
5.4.10.0030.05716.25
5.4.00.0070.07715.73
5.3.290.0070.04014.64
5.3.280.0070.07714.56
5.3.270.0230.06014.39
5.3.260.0000.04714.39
5.3.250.0070.06714.55
5.3.240.0070.04314.53
5.3.230.0030.08014.38
5.3.220.0070.07314.58
5.3.210.0100.03714.51
5.3.200.0000.04714.50
5.3.190.0070.06014.50
5.3.180.0100.04714.35
5.3.170.0070.03314.48
5.3.160.0170.06314.65
5.3.150.0000.06314.54
5.3.140.0170.06714.34
5.3.130.0130.07014.43
5.3.120.0070.04714.42
5.3.110.0070.06314.43
5.3.100.0070.04013.93
5.3.90.0000.06013.90
5.3.80.0170.06013.83
5.3.70.0130.06713.94
5.3.60.0130.06013.93
5.3.50.0100.07313.73
5.3.40.0100.06713.87
5.3.30.0030.04713.75
5.3.20.0030.05713.66
5.3.10.0130.06713.44
5.3.00.0130.07013.56
5.2.170.0030.06711.13
5.2.160.0130.04310.96
5.2.150.0030.04311.14
5.2.140.0070.03711.12
5.2.130.0070.06010.96
5.2.120.0000.06711.03
5.2.110.0130.04711.07
5.2.100.0070.06011.03
5.2.90.0130.05311.09
5.2.80.0070.06711.03
5.2.70.0130.05311.04
5.2.60.0130.05010.89
5.2.50.0030.03711.09
5.2.40.0000.05010.88
5.2.30.0000.06310.86
5.2.20.0030.03010.92
5.2.10.0100.05010.89
5.2.00.0070.03710.86
5.1.60.0070.05010.03
5.1.50.0070.02710.00
5.1.40.0000.0579.93
5.1.30.0030.06010.38
5.1.20.0000.05010.23
5.1.10.0000.05310.02
5.1.00.0000.04310.12
5.0.50.0070.0438.56
5.0.40.0030.0438.25
5.0.30.0030.0608.21
5.0.20.0000.0408.19
5.0.10.0070.0378.07
5.0.00.0000.0508.15
4.4.90.0030.0337.21
4.4.80.0100.0307.21
4.4.70.0100.0277.21
4.4.60.0000.0377.21
4.4.50.0030.0337.21
4.4.40.0000.0577.21
4.4.30.0100.0277.21
4.4.20.0070.0307.21
4.4.10.0070.0307.21
4.4.00.0000.0507.21
4.3.110.0030.0307.21
4.3.100.0000.0307.21
4.3.90.0130.0277.21
4.3.80.0000.0577.21
4.3.70.0100.0177.21
4.3.60.0000.0207.21
4.3.50.0070.0337.21
4.3.40.0000.0477.21
4.3.30.0030.0337.21
4.3.20.0000.0377.21
4.3.10.0000.0377.21
4.3.00.0030.0277.21

preferences:
43.13 ms | 401 KiB | 5 Q