3v4l.org

run code in 300+ PHP versions simultaneously
<?php $res1 = array( array('a'=>'aa','b'=>'bb'), array('a'=>'aaa','b'=>'bbb') ); $res2 = array( array('a'=>'a','b'=>'b') ); $res3 = array_merge_recursive($res1 + $res2); var_dump($res3);

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)
8.3.60.0110.00418.16
8.3.50.0090.01116.23
8.3.40.0000.01518.72
8.3.30.0040.01118.59
8.3.20.0000.00818.55
8.3.10.0000.00818.51
8.3.00.0040.00419.26
8.2.180.0070.01516.63
8.2.170.0040.01222.96
8.2.160.0130.00718.79
8.2.150.0050.00324.18
8.2.140.0140.00024.66
8.2.130.0060.00326.16
8.2.120.0000.00719.66
8.2.110.0060.00321.05
8.2.100.0070.00417.84
8.2.90.0000.00819.27
8.2.80.0050.00317.97
8.2.70.0100.00017.63
8.2.60.0040.00417.79
8.2.50.0040.00417.79
8.2.40.0040.00419.47
8.2.30.0070.00317.67
8.2.20.0070.00317.60
8.2.10.0040.00417.61
8.2.00.0000.00717.71
8.1.280.0040.01125.92
8.1.270.0040.00423.99
8.1.260.0080.00026.35
8.1.250.0040.00428.09
8.1.240.0060.00321.35
8.1.230.0120.00017.83
8.1.220.0000.00817.74
8.1.210.0080.00018.77
8.1.200.0060.00317.35
8.1.190.0030.00617.23
8.1.180.0080.00019.01
8.1.170.0030.00617.62
8.1.160.0040.00419.04
8.1.150.0070.00018.56
8.1.140.0040.00417.29
8.1.130.0030.00317.43
8.1.120.0070.00017.30
8.1.110.0040.00417.39
8.1.100.0030.00517.27
8.1.90.0040.00417.34
8.1.80.0000.00717.38
8.1.70.0070.00017.39
8.1.60.0030.00517.35
8.1.50.0040.00417.41
8.1.40.0000.00717.44
8.1.30.0090.00017.46
8.1.20.0080.00417.62
8.1.10.0040.00417.50
8.1.00.0040.00417.39
8.0.300.0000.00818.77
8.0.290.0000.00716.75
8.0.280.0030.00318.60
8.0.270.0040.00417.19
8.0.260.0030.00316.81
8.0.250.0040.00416.81
8.0.240.0050.00316.93
8.0.230.0080.00016.85
8.0.220.0000.00716.87
8.0.210.0000.00716.75
8.0.200.0060.00016.89
8.0.190.0000.00717.01
8.0.180.0030.00416.80
8.0.170.0000.00916.90
8.0.160.0030.00316.90
8.0.150.0040.00416.90
8.0.140.0070.00016.89
8.0.130.0000.00513.34
8.0.120.0000.00916.73
8.0.110.0000.00716.82
8.0.100.0000.00716.76
8.0.90.0000.00716.75
8.0.80.0060.01016.87
8.0.70.0000.00816.79
8.0.60.0080.00016.74
8.0.50.0080.00016.67
8.0.30.0160.00617.07
8.0.20.0110.00816.90
8.0.10.0040.00416.85
8.0.00.0130.00516.79
7.4.330.0050.00012.93
7.4.320.0030.00316.57
7.4.300.0000.00616.47
7.4.290.0040.00716.41
7.4.280.0030.00516.41
7.4.270.0030.00716.35
7.4.260.0000.00513.25
7.4.250.0000.00816.43
7.4.240.0000.00716.42
7.4.230.0000.00716.50
7.4.220.0080.01016.52
7.4.210.0110.00616.47
7.4.200.0070.00016.63
7.4.190.0030.00516.48
7.4.160.0080.00816.56
7.4.150.0120.00616.44
7.4.140.0070.01917.86
7.4.130.0120.00916.26
7.4.120.0090.00916.36
7.4.110.0090.00916.47
7.4.100.0110.00816.42
7.4.90.0080.00816.35
7.4.80.0120.00419.39
7.4.70.0100.00716.43
7.4.60.0060.00916.32
7.4.50.0060.00316.49
7.4.40.0040.00816.35
7.4.30.0120.00416.33
7.4.00.0030.01414.82
7.3.330.0030.00313.06
7.3.320.0060.00013.05
7.3.310.0000.00816.13
7.3.300.0030.00316.18
7.3.290.0090.00616.12
7.3.280.0030.01716.25
7.3.270.0120.00616.42
7.3.260.0070.01116.29
7.3.240.0030.01516.56
7.3.230.0080.00816.17
7.3.210.0030.01516.57
7.3.200.0080.00816.34
7.3.190.0120.00416.09
7.3.180.0120.00316.51
7.3.170.0000.02316.19
7.3.160.0110.00816.43
7.3.120.0110.00415.04
7.2.330.0090.01216.69
7.2.320.0090.01216.45
7.2.310.0110.01116.24
7.2.300.0110.00716.45
7.2.290.0070.01016.35
7.2.00.0070.00719.24
7.1.100.0040.00718.32
7.1.70.0000.00917.16
7.1.60.0070.01719.25
7.1.50.0060.00616.71
7.1.00.0030.03322.28
7.0.200.0000.00916.88
7.0.140.0000.07721.97
7.0.120.0100.06722.03
7.0.60.0070.07320.01
7.0.50.0030.06717.88
7.0.40.0030.04720.08
7.0.30.0030.04320.10
7.0.20.0030.06019.95
7.0.10.0070.07320.04
7.0.00.0030.04020.11
5.6.280.0000.07720.80
5.6.210.0130.03320.52
5.6.200.0030.04318.08
5.6.190.0070.06320.57
5.6.180.0030.05020.58
5.6.170.0100.08320.63
5.6.160.0000.04720.26
5.6.150.0030.04020.34
5.6.140.0030.05720.39
5.6.130.0000.05320.40
5.6.120.0000.04720.34
5.6.110.0030.08320.27
5.6.100.0000.08020.26
5.6.90.0070.07720.32
5.6.80.0030.05319.81
5.6.70.0070.04319.54
5.6.60.0070.07319.48
5.6.50.0030.07319.73
5.6.40.0100.07019.63
5.6.30.0000.08319.79
5.6.20.0000.08319.79
5.6.10.0030.08719.70
5.6.00.0070.07019.62
5.5.350.0130.04320.44
5.5.340.0100.07718.02
5.5.330.0000.07020.19
5.5.320.0100.05320.27
5.5.310.0070.07720.14
5.5.300.0100.05720.26
5.5.290.0070.05019.93
5.5.280.0030.04019.96
5.5.270.0070.08320.11
5.5.260.0270.07720.23
5.5.250.0130.07719.93
5.5.240.0000.08719.46
5.5.230.0000.07019.50
5.5.220.0070.08019.29
5.5.210.0100.04719.45
5.5.200.0130.07019.46
5.5.190.0000.05019.26
5.5.180.0070.07719.59
5.5.160.0070.06019.52
5.5.150.0070.04319.55
5.5.140.0000.08319.47
5.5.130.0030.06319.60
5.5.120.0000.04319.55
5.5.110.0030.08019.55
5.5.100.0030.04719.32
5.5.90.0130.04719.38
5.5.80.0030.04019.17
5.5.70.0070.08019.31
5.5.60.0100.07019.51
5.5.50.0030.08019.50
5.5.40.0070.07319.45
5.5.30.0100.07319.39
5.5.20.0070.08319.25
5.5.10.0070.07719.14
5.5.00.0070.05319.53
5.4.450.0030.04019.11
5.4.440.0070.04719.50
5.4.430.0030.07019.48
5.4.420.0100.06319.49
5.4.410.0000.07019.28
5.4.400.0200.04719.08
5.4.390.0000.07719.14
5.4.380.0000.05719.18
5.4.370.0070.06019.18
5.4.360.0100.04018.82
5.4.350.0030.07718.79
5.4.340.0000.07719.18
5.4.320.0000.08019.14
5.4.310.0000.07719.14
5.4.300.0000.04318.81
5.4.290.0030.04018.91
5.4.280.0000.06018.91
5.4.270.0000.08019.17
5.4.260.0000.07319.14
5.4.250.0030.07318.91
5.4.240.0000.08318.78
5.4.230.0070.06318.91
5.4.220.0070.06018.90
5.4.210.0030.07719.11
5.4.200.0100.06319.10
5.4.190.0030.07318.77
5.4.180.0000.08319.07
5.4.170.0000.04719.06
5.4.160.0070.06319.12
5.4.150.0100.07019.15
5.4.140.0030.07016.33
5.4.130.0030.05716.47
5.4.120.0030.06716.18
5.4.110.0100.06716.36
5.4.100.0030.07016.39
5.4.90.0000.04716.41
5.4.80.0030.05316.25
5.4.70.0070.07016.59
5.4.60.0030.07016.21
5.4.50.0000.08016.25
5.4.40.0000.07016.33
5.4.30.0100.05316.58
5.4.20.0100.06316.35
5.4.10.0070.05016.39
5.4.00.0070.06315.79
5.3.290.0000.07314.59
5.3.280.0000.06314.55
5.3.270.0100.06314.52
5.3.260.0030.07014.53
5.3.250.0100.04314.50
5.3.240.0000.08014.44
5.3.230.0030.04714.57
5.3.220.0070.05014.52
5.3.210.0030.05314.58
5.3.200.0000.04014.66
5.3.190.0070.07714.49
5.3.180.0030.03714.50
5.3.170.0000.08014.38
5.3.160.0030.06014.44
5.3.150.0030.07014.50
5.3.140.0000.08014.34
5.3.130.0030.07714.35
5.3.120.0000.09714.48
5.3.110.0070.05714.65
5.3.100.0070.07313.85
5.3.90.0070.07713.95
5.3.80.0000.06313.96
5.3.70.0000.08014.11
5.3.60.0100.04313.93
5.3.50.0030.03714.04
5.3.40.0000.08013.96
5.3.30.0030.07013.84
5.3.20.0000.07013.62
5.3.10.0070.04713.75
5.3.00.0070.07013.61
5.2.170.0030.04312.01
5.2.160.0030.06012.01
5.2.150.0070.04012.01
5.2.140.0000.06012.01
5.2.130.0030.04312.01
5.2.120.0030.03712.01
5.2.110.0030.05712.01
5.2.100.0000.05012.01
5.2.90.0030.06012.01
5.2.80.0030.05712.01
5.2.70.0030.03712.01
5.2.60.0030.05712.01
5.2.50.0000.06712.01
5.2.40.0000.05012.01
5.2.30.0070.05712.01
5.2.20.0000.03712.01
5.2.10.0000.05712.01
5.2.00.0030.06312.01
5.1.60.0030.02712.01
5.1.50.0000.03312.01
5.1.40.0030.02712.01
5.1.30.0000.04712.01
5.1.20.0000.04312.01
5.1.10.0030.05712.01
5.1.00.0070.05012.01
5.0.50.0000.02012.01
5.0.40.0070.03712.01
5.0.30.0000.06712.01
5.0.20.0030.03312.01
5.0.10.0000.04312.01
5.0.00.0000.04312.01
4.4.90.0030.02312.01
4.4.80.0030.02712.01
4.4.70.0030.02312.01
4.4.60.0030.01312.01
4.4.50.0030.03312.01
4.4.40.0000.05712.01
4.4.30.0030.03312.01
4.4.20.0000.01712.01
4.4.10.0000.01712.01
4.4.00.0000.03012.01
4.3.110.0000.03312.01
4.3.100.0000.02712.01
4.3.90.0030.02312.01
4.3.80.0030.03012.01
4.3.70.0000.03712.01
4.3.60.0000.03712.01
4.3.50.0030.04012.01
4.3.40.0030.03012.01
4.3.30.0000.02712.01
4.3.20.0070.03012.01
4.3.10.0000.02712.01
4.3.00.0000.02712.01

preferences:
57.92 ms | 400 KiB | 5 Q