3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a1 = ['foo' => 'bar', 'baz' => null]; $a2 = ['foo' => 'baf', 'baz' => 'lalala', 'bam' => 2]; var_dump($a1 + $a2); var_dump(array_merge($a1, $a2));

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)
8.3.60.0090.00618.30
8.3.50.0120.00418.04
8.3.40.0040.01118.71
8.3.30.0120.00318.59
8.3.20.0070.00020.21
8.3.10.0050.00323.51
8.3.00.0080.00020.95
8.2.180.0060.01016.32
8.2.170.0040.01122.96
8.2.160.0140.00318.96
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0050.00222.12
8.2.120.0080.00026.35
8.2.110.0060.00322.08
8.2.100.0040.00817.84
8.2.90.0050.00319.22
8.2.80.0050.00317.97
8.2.70.0030.00517.50
8.2.60.0060.00317.80
8.2.50.0040.00418.10
8.2.40.0040.00420.61
8.2.30.0000.00920.59
8.2.20.0000.00817.54
8.2.10.0040.00417.98
8.2.00.0080.00017.98
8.1.280.0100.01325.92
8.1.270.0040.00423.87
8.1.260.0040.00428.09
8.1.250.0000.00728.09
8.1.240.0050.00523.97
8.1.230.0080.00419.01
8.1.220.0050.00417.74
8.1.210.0050.00318.77
8.1.200.0030.00617.10
8.1.190.0080.00017.23
8.1.180.0060.00618.10
8.1.170.0030.00618.59
8.1.160.0050.00220.91
8.1.150.0070.00018.80
8.1.140.0000.00719.48
8.1.130.0040.00417.59
8.1.120.0030.00317.35
8.1.110.0030.00617.29
8.1.100.0040.00417.29
8.1.90.0080.00017.27
8.1.80.0070.00017.29
8.1.70.0030.00317.27
8.1.60.0060.00317.51
8.1.50.0040.00417.48
8.1.40.0040.00417.47
8.1.30.0000.00917.57
8.1.20.0030.00517.56
8.1.10.0050.00317.32
8.1.00.0000.00817.25
8.0.300.0040.00418.77
8.0.290.0040.00416.63
8.0.280.0040.00418.23
8.0.270.0000.00817.24
8.0.260.0000.00617.18
8.0.250.0000.00616.89
8.0.240.0030.00316.83
8.0.230.0040.00516.86
8.0.220.0040.00416.93
8.0.210.0000.00716.83
8.0.200.0030.00316.94
8.0.190.0000.00716.90
8.0.180.0020.00516.95
8.0.170.0040.00416.90
8.0.160.0000.00716.78
8.0.150.0040.00416.78
8.0.140.0000.00716.86
8.0.130.0060.00013.29
8.0.120.0050.00216.73
8.0.110.0000.00716.76
8.0.100.0000.00716.83
8.0.90.0040.00416.69
8.0.80.0060.00916.83
8.0.70.0040.00416.74
8.0.60.0040.00416.90
8.0.50.0000.00716.76
8.0.30.0080.00717.02
8.0.20.0120.01217.40
8.0.10.0050.00217.02
8.0.00.0100.00816.72
7.4.330.0020.00215.08
7.4.320.0060.00016.40
7.4.300.0020.00516.48
7.4.290.0000.00716.44
7.4.280.0000.00816.50
7.4.270.0000.00716.42
7.4.260.0000.00716.32
7.4.250.0080.00016.38
7.4.240.0000.00716.37
7.4.230.0030.00316.28
7.4.220.0130.01016.42
7.4.210.0070.00716.41
7.4.200.0000.00716.57
7.4.160.0080.00816.41
7.4.150.0080.01117.40
7.4.140.0070.01017.86
7.4.130.0140.00816.41
7.4.120.0080.01316.42
7.4.110.0060.01616.47
7.4.100.0100.00816.31
7.4.90.0060.01316.34
7.4.80.0170.00619.39
7.4.70.0060.01116.45
7.4.60.0060.00916.39
7.4.50.0030.00716.40
7.4.40.0190.00916.56
7.4.30.0130.01016.34
7.4.00.0090.00714.84
7.3.330.0000.00513.08
7.3.320.0000.00512.92
7.3.310.0040.00415.99
7.3.300.0000.00716.18
7.3.290.0050.01116.18
7.3.280.0110.00616.21
7.3.270.0220.00517.40
7.3.260.0100.00716.44
7.3.250.0120.00516.27
7.3.240.0150.00616.22
7.3.230.0110.00716.39
7.3.210.0030.01416.32
7.3.200.0130.00916.19
7.3.190.0080.00916.13
7.3.180.0130.00316.17
7.3.170.0190.00316.42
7.3.160.0030.01416.38
7.3.120.0100.00814.82
7.3.110.0120.00614.79
7.3.100.0100.00614.61
7.3.90.0040.00914.85
7.3.80.0090.00514.79
7.3.70.0040.00914.70
7.3.60.0040.00914.83
7.3.50.0040.00914.64
7.3.40.0080.00514.84
7.3.30.0070.00814.67
7.3.20.0040.00916.56
7.3.10.0070.00516.51
7.3.00.0080.00716.70
7.2.330.0060.01216.50
7.2.320.0140.00416.30
7.2.310.0070.01716.39
7.2.300.0090.00916.37
7.2.290.0140.00316.52
7.2.250.0080.00914.85
7.2.240.0080.01114.86
7.2.230.0050.01214.95
7.2.220.0050.01014.70
7.2.210.0090.00414.92
7.2.200.0070.00415.03
7.2.190.0060.00914.75
7.2.180.0110.00314.93
7.2.170.0080.00514.82
7.2.160.0030.01014.96
7.2.150.0060.00616.72
7.2.140.0060.01016.71
7.2.130.0060.00816.77
7.2.120.0050.00716.81
7.2.110.0090.00816.83
7.2.100.0090.01016.85
7.2.90.0050.01116.70
7.2.80.0080.00816.86
7.2.70.0110.00316.64
7.2.60.0100.00616.68
7.2.50.0040.01016.79
7.2.40.0080.00516.73
7.2.30.0060.01116.82
7.2.20.0050.01016.75
7.2.10.0080.00716.80
7.2.00.0070.00917.42
7.1.330.0050.00815.71
7.1.320.0060.00715.81
7.1.310.0030.01115.78
7.1.300.0090.00415.62
7.1.290.0050.00815.62
7.1.280.0040.01015.72
7.1.270.0060.00915.78
7.1.260.0050.00815.69
7.1.250.0090.00615.75
7.1.240.0060.00315.78
7.1.230.0040.01115.86
7.1.220.0000.00915.85
7.1.210.0030.00915.79
7.1.200.0030.01015.59
7.1.190.0070.00715.83
7.1.180.0030.01015.66
7.1.170.0000.01115.63
7.1.160.0060.00915.80
7.1.150.0030.01215.88
7.1.140.0090.00315.79
7.1.130.0030.01015.65
7.1.120.0030.01515.41
7.1.110.0060.00615.84
7.1.100.0000.01516.98
7.1.90.0000.00915.59
7.1.80.0030.00715.85
7.1.70.0060.00716.30
7.1.60.0050.01217.96
7.1.50.0080.00015.82
7.1.40.0000.01215.90
7.1.30.0080.00815.82
7.1.20.0060.00615.75
7.1.10.0000.00815.80
7.1.00.0070.03919.17
7.0.330.0030.01215.38
7.0.320.0070.01015.39
7.0.310.0100.00315.37
7.0.300.0100.00615.32
7.0.290.0070.00715.36
7.0.280.0070.00715.40
7.0.270.0100.00315.53
7.0.260.0140.00315.41
7.0.250.0110.00415.39
7.0.240.0030.01015.52
7.0.230.0000.01015.25
7.0.220.0030.01015.40
7.0.210.0030.00615.49
7.0.200.0150.00615.78
7.0.190.0030.01315.40
7.0.180.0060.00615.53
7.0.170.0040.00815.51
7.0.160.0030.00715.15
7.0.150.0040.00715.61
7.0.140.0030.01315.53
7.0.130.0030.00715.20
7.0.120.0070.00315.58
7.0.110.0090.00315.52
7.0.100.0030.01015.21
7.0.90.0000.01015.37
7.0.80.0090.00615.20
7.0.70.0100.00015.33
7.0.60.0050.03318.37
7.0.50.0090.02216.66
7.0.40.0500.04016.80
7.0.30.0370.03716.80
7.0.20.0420.03016.62
7.0.10.0280.04016.72
7.0.00.0420.03216.64
5.6.400.0030.01214.38
5.6.390.0030.01014.18
5.6.380.0040.01114.43
5.6.370.0000.01214.38
5.6.360.0100.00314.46
5.6.350.0070.00714.49
5.6.340.0060.01014.05
5.6.330.0060.00914.39
5.6.320.0030.01014.17
5.6.310.0080.00614.40
5.6.300.0030.00914.20
5.6.290.0000.01314.18
5.6.280.0040.00414.41
5.6.270.0030.00914.36
5.6.260.0110.00414.23
5.6.250.0070.00614.43
5.6.240.0030.01014.27
5.6.230.0030.01314.18
5.6.220.0060.00814.14
5.6.210.0020.04417.47
5.6.200.0080.04316.09
5.6.190.0270.03817.56
5.6.180.0390.03317.39
5.6.170.0340.03217.32
5.6.160.0430.03517.49
5.6.150.0400.02717.29
5.6.140.0230.04217.15
5.6.130.0440.03517.30
5.6.120.0110.03117.29
5.6.110.0100.02917.32
5.6.100.0230.03017.14
5.6.90.0390.03217.04
5.6.80.0250.03716.95
5.6.70.0430.02516.77
5.6.60.0370.03216.94
5.6.50.0300.03616.98
5.6.40.0330.03016.87
5.6.30.0300.03216.93
5.6.20.0300.03216.88
5.6.10.0350.02816.87
5.6.00.0330.03116.83
5.5.380.0060.00714.10
5.5.370.0040.01114.14
5.5.360.0070.01014.38
5.5.350.0180.04017.15
5.5.340.0050.02115.97
5.5.330.0290.02617.01
5.5.320.0320.03117.28
5.5.310.0280.03417.34
5.5.300.0270.03817.11
5.5.290.0390.03217.07
5.5.280.0100.02717.03
5.5.270.0110.02817.05
5.5.260.0320.03316.92
5.5.250.0330.02817.13
5.5.240.0410.02616.75
5.5.230.0360.03816.88
5.5.220.0520.02316.88
5.5.210.0300.03616.72
5.5.200.0300.03716.81
5.5.190.0280.03416.63
5.5.180.0340.02916.91
5.5.170.0100.00313.86
5.5.160.0330.02816.80
5.5.150.0370.03516.71
5.5.140.0300.03216.75
5.5.130.0250.03416.74
5.5.120.0350.02616.74
5.5.110.0370.03216.89
5.5.100.0350.02716.69
5.5.90.0250.03716.73
5.5.80.0350.03716.68
5.5.70.0350.03516.86
5.5.60.0290.03416.84
5.5.50.0430.02616.64
5.5.40.0350.03216.64
5.5.30.0430.02716.74
5.5.20.0370.03316.76
5.5.10.0300.03916.66
5.5.00.0390.03016.51

preferences:
63.52 ms | 401 KiB | 5 Q