3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = array('1'=>'a1','2'=>'a2','a'=>'1'); $b = array('2'=>'b2','b'=>'2'); var_dump($a+$b); var_dump($b+$a); var_dump(array_merge($a,$b)); var_dump(array_merge($b,$a));

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)
8.3.70.0060.01318.30
8.3.60.0120.00618.43
8.3.50.0030.01416.30
8.3.40.0070.00718.71
8.3.30.0040.01118.51
8.3.20.0070.00020.31
8.3.10.0030.00618.66
8.3.00.0080.00023.83
8.2.190.0130.00316.66
8.2.180.0070.01518.29
8.2.170.0100.01022.96
8.2.160.0110.00322.04
8.2.150.0040.00424.18
8.2.140.0080.00024.66
8.2.130.0040.00420.38
8.2.120.0040.00426.35
8.2.110.0110.00721.00
8.2.100.0040.00817.50
8.2.90.0000.00819.17
8.2.80.0040.00417.97
8.2.70.0060.00317.63
8.2.60.0080.00017.80
8.2.50.0030.00618.10
8.2.40.0040.00422.32
8.2.30.0040.00419.16
8.2.20.0030.00617.89
8.2.10.0040.00418.02
8.2.00.0000.00717.95
8.1.280.0000.01825.92
8.1.270.0070.00022.11
8.1.260.0030.00626.35
8.1.250.0040.00428.09
8.1.240.0100.00019.15
8.1.230.0120.00017.64
8.1.220.0030.00617.74
8.1.210.0060.00318.77
8.1.200.0040.00417.13
8.1.190.0050.00317.23
8.1.180.0030.00518.10
8.1.170.0060.00318.54
8.1.160.0020.00518.79
8.1.150.0040.00420.21
8.1.140.0000.00719.07
8.1.130.0030.00318.81
8.1.120.0070.00017.36
8.1.110.0030.00517.29
8.1.100.0040.00417.41
8.1.90.0070.00317.27
8.1.80.0050.00317.34
8.1.70.0030.00317.27
8.1.60.0040.00417.42
8.1.50.0040.00417.38
8.1.40.0040.00417.37
8.1.30.0040.00417.54
8.1.20.0000.00917.55
8.1.10.0020.00517.43
8.1.00.0000.00817.39
8.0.300.0050.00319.93
8.0.290.0080.00316.75
8.0.280.0000.00718.37
8.0.270.0040.00417.24
8.0.260.0030.00318.80
8.0.250.0000.00816.87
8.0.240.0030.00316.91
8.0.230.0000.00716.95
8.0.220.0000.00916.88
8.0.210.0040.00416.77
8.0.200.0030.00316.93
8.0.190.0060.00316.82
8.0.180.0040.00416.94
8.0.170.0070.00316.89
8.0.160.0070.00016.84
8.0.150.0070.00316.70
8.0.140.0000.00716.81
8.0.130.0060.00313.39
8.0.120.0070.00016.75
8.0.110.0040.00416.70
8.0.100.0040.00416.82
8.0.90.0050.00216.94
8.0.80.0070.01016.88
8.0.70.0000.00816.89
8.0.60.0050.00316.79
8.0.50.0040.00416.88
8.0.30.0110.00917.12
8.0.20.0130.00917.40
8.0.10.0000.00716.88
8.0.00.0150.00316.66
7.4.330.0000.00515.55
7.4.320.0070.00016.43
7.4.300.0060.00016.44
7.4.290.0000.00716.57
7.4.280.0050.00316.43
7.4.270.0000.00616.54
7.4.260.0000.00816.30
7.4.250.0080.00016.41
7.4.240.0070.00016.46
7.4.230.0040.00416.64
7.4.220.0090.00916.54
7.4.210.0090.00916.45
7.4.200.0000.00816.26
7.4.160.0060.01216.50
7.4.150.0070.01017.40
7.4.140.0130.01217.86
7.4.130.0120.00616.51
7.4.120.0120.01016.49
7.4.110.0130.00516.41
7.4.100.0040.01516.42
7.4.90.0150.00316.22
7.4.80.0090.00919.39
7.4.70.0090.01516.37
7.4.60.0090.00916.36
7.4.50.0110.00416.38
7.4.40.0090.00916.23
7.4.30.0160.00616.50
7.4.00.0140.00414.94
7.3.330.0030.00312.98
7.3.320.0030.00313.01
7.3.310.0030.00315.96
7.3.300.0000.00916.15
7.3.290.0000.00716.21
7.3.280.0060.00916.19
7.3.270.0080.01117.40
7.3.260.0070.01016.24
7.3.250.0120.00716.15
7.3.240.0120.00816.33
7.3.230.0130.01216.19
7.3.210.0130.01416.39
7.3.200.0090.00916.51
7.3.190.0060.01116.20
7.3.180.0080.01416.16
7.3.170.0000.01616.35
7.3.160.0070.01416.31
7.2.330.0090.00916.33
7.2.320.0070.01316.52
7.2.310.0140.00316.57
7.2.300.0190.00016.62
7.2.290.0110.00716.30
7.2.60.0050.00516.96
7.2.00.0050.00919.40
7.1.200.0090.00615.69
7.1.120.0040.01118.68
7.1.110.0070.00717.97
7.1.100.0130.00718.36
7.1.90.0060.00918.05
7.1.80.0070.00717.96
7.1.70.0000.01316.87
7.1.60.0180.01435.14
7.1.50.0190.01034.51
7.1.40.0250.00434.23
7.1.30.0180.01234.39
7.1.20.0280.00334.64
7.1.10.0100.00316.43
7.1.00.0100.00616.51

preferences:
51.54 ms | 401 KiB | 5 Q