3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = ['id' => 'a']; $b = ['id' => 'b']; var_dump(array_merge($a, $b));

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)
8.3.60.0000.01516.63
8.3.50.0100.00716.46
8.3.40.0140.00018.73
8.3.30.0070.00718.54
8.3.20.0040.00420.21
8.3.10.0050.00321.77
8.3.00.0030.00717.43
8.2.180.0000.01416.32
8.2.170.0030.01222.96
8.2.160.0100.00320.52
8.2.150.0030.00624.18
8.2.140.0050.00224.66
8.2.130.0040.00419.24
8.2.120.0040.00426.35
8.2.110.0060.00321.00
8.2.100.0090.00317.88
8.2.90.0040.00419.23
8.2.80.0000.00817.97
8.2.70.0080.00317.50
8.2.60.0070.00017.91
8.2.50.0030.00718.10
8.2.40.0040.00420.66
8.2.30.0030.00620.98
8.2.20.0050.00217.93
8.2.10.0000.00817.97
8.2.00.0000.00718.09
8.1.280.0070.01425.92
8.1.270.0000.00722.14
8.1.260.0040.00426.35
8.1.250.0080.00028.09
8.1.240.0070.00323.84
8.1.230.0030.00718.86
8.1.220.0090.00017.74
8.1.210.0030.00618.77
8.1.200.0000.01117.23
8.1.190.0080.00017.23
8.1.180.0070.00018.10
8.1.170.0030.00620.45
8.1.160.0040.00418.96
8.1.150.0000.00820.52
8.1.140.0040.00419.45
8.1.130.0000.00718.86
8.1.120.0000.00717.36
8.1.110.0000.00717.27
8.1.100.0020.00517.38
8.1.90.0040.00817.40
8.1.80.0030.00317.43
8.1.70.0000.00717.28
8.1.60.0000.01017.48
8.1.50.0000.00817.41
8.1.40.0000.00717.33
8.1.30.0030.00517.49
8.1.20.0040.00417.61
8.1.10.0070.00017.45
8.1.00.0030.00617.26
8.0.300.0080.00018.77
8.0.290.0070.00016.75
8.0.280.0030.00318.43
8.0.270.0000.00717.09
8.0.260.0000.00816.67
8.0.250.0030.00316.84
8.0.240.0000.00716.77
8.0.230.0070.00016.79
8.0.220.0030.00316.82
8.0.210.0030.00316.76
8.0.200.0000.00816.89
8.0.190.0030.00516.83
8.0.180.0040.00416.84
8.0.170.0030.00316.80
8.0.160.0000.00716.90
8.0.150.0040.00416.68
8.0.140.0000.00716.77
8.0.130.0000.00613.21
8.0.120.0000.00716.75
8.0.110.0000.00816.68
8.0.100.0040.00416.61
8.0.90.0000.00716.64
8.0.80.0100.00616.75
8.0.70.0040.00416.79
8.0.60.0000.00816.86
8.0.50.0000.00716.76
8.0.30.0110.00616.93
8.0.20.0120.00817.40
8.0.10.0040.00416.97
8.0.00.0160.00616.53
7.4.330.0050.00015.55
7.4.320.0000.00716.50
7.4.300.0030.00316.37
7.4.290.0000.00916.45
7.4.280.0000.00816.40
7.4.270.0080.00016.54
7.4.260.0000.00513.16
7.4.250.0080.00016.46
7.4.240.0000.00816.43
7.4.230.0070.00016.46
7.4.220.0110.00716.38
7.4.210.0090.00716.52
7.4.200.0030.00316.60
7.4.160.0090.00816.37
7.4.150.0070.01017.40
7.4.140.0080.01217.86
7.4.130.0030.01516.21
7.4.120.0110.00916.39
7.4.110.0060.01116.36
7.4.100.0030.01516.35
7.4.90.0090.00916.48
7.4.80.0110.00619.39
7.4.70.0060.01116.38
7.4.60.0060.01016.37
7.4.50.0130.00316.27
7.4.40.0090.00916.28
7.4.30.0130.00316.42
7.4.00.0030.01114.48
7.3.330.0060.00012.98
7.3.320.0000.00512.97
7.3.310.0040.00416.19
7.3.300.0060.00315.96
7.3.290.0000.00716.14
7.3.280.0080.00816.13
7.3.270.0060.01217.40
7.3.260.0100.00716.28
7.3.250.0100.00916.38
7.3.240.0100.00816.19
7.3.230.0130.00516.11
7.3.210.0030.01416.43
7.3.200.0070.01016.11
7.3.190.0050.01016.03
7.3.180.0090.00816.41
7.3.170.0190.00316.19
7.3.160.0080.00816.29
7.3.120.0060.01214.95
7.3.110.0070.00714.75
7.3.100.0090.00614.67
7.3.90.0040.00814.60
7.3.80.0030.01014.81
7.3.70.0060.00914.70
7.3.60.0100.00614.58
7.3.50.0040.01214.31
7.3.40.0060.00314.61
7.3.30.0030.01414.41
7.3.20.0090.00616.33
7.3.10.0110.00716.48
7.3.00.0030.00916.59
7.2.330.0120.00616.32
7.2.320.0060.00916.18
7.2.310.0070.01016.53
7.2.300.0160.00016.29
7.2.290.0070.01016.41
7.2.250.0070.01014.84
7.2.240.0040.01514.96
7.2.230.0070.00414.68
7.2.220.0030.01014.57
7.2.210.0000.01515.00
7.2.200.0090.00314.78
7.2.190.0140.00314.59
7.2.180.0090.00014.90
7.2.170.0030.01014.76
7.2.60.0060.00616.84
7.2.00.0120.00019.33
7.1.330.0030.01615.65
7.1.320.0060.00615.77
7.1.310.0060.00915.72
7.1.300.0060.00615.68
7.1.290.0070.00315.39
7.1.280.0060.00615.46
7.1.270.0040.00815.73
7.1.260.0000.00915.66
7.1.200.0090.00315.80
7.1.100.0090.00917.88
7.1.70.0090.00317.12
7.1.60.0260.00634.98
7.1.50.0180.01134.68
7.1.40.0200.01034.27
7.1.30.0220.00634.41
7.1.20.0190.01234.51
7.1.10.0090.00916.50
7.1.00.0070.00716.46
7.0.200.0060.00616.55
7.0.190.0000.01316.55
7.0.180.0060.00816.05
7.0.170.0030.01016.34
7.0.160.0000.01416.29
7.0.150.0080.00816.24
7.0.140.0060.00916.15
7.0.130.0060.00616.45
7.0.120.0040.01116.44
7.0.110.0060.00616.35
7.0.100.0060.00616.42
7.0.90.0060.00816.23
7.0.80.0030.01016.30
7.0.70.0070.00716.13
7.0.60.0000.01316.12
7.0.50.0070.00716.16
7.0.40.0040.01216.59
7.0.30.0040.00816.42
7.0.20.0000.01316.12
7.0.10.0030.00916.25
7.0.00.0090.00316.39

preferences:
44.33 ms | 401 KiB | 5 Q