3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a1 = ['foo' => 'bar', 'baz' => null]; $a2 = ['foo' => 'baf', 'bam' => 2]; var_dump($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)
8.3.60.0110.00418.18
8.3.50.0160.00521.98
8.3.40.0090.00618.77
8.3.30.0040.01118.65
8.3.20.0110.00420.18
8.3.10.0090.00023.59
8.3.00.0030.00520.76
8.2.180.0110.00716.50
8.2.170.0060.01222.96
8.2.160.0070.00719.07
8.2.150.0070.00024.18
8.2.140.0060.00324.66
8.2.130.0040.00422.27
8.2.120.0040.00426.35
8.2.110.0070.00320.89
8.2.100.0040.00817.63
8.2.90.0060.00319.02
8.2.80.0000.00817.97
8.2.70.0000.00817.50
8.2.60.0000.00817.80
8.2.50.0000.00818.10
8.2.40.0000.00720.59
8.2.30.0060.00320.61
8.2.20.0000.00717.55
8.2.10.0040.00418.03
8.2.00.0080.00017.91
8.1.280.0130.00925.92
8.1.270.0060.00323.82
8.1.260.0040.00428.09
8.1.250.0030.00528.09
8.1.240.0030.00622.01
8.1.230.0040.00817.66
8.1.220.0000.00817.74
8.1.210.0000.00918.77
8.1.200.0060.00317.23
8.1.190.0080.00017.22
8.1.180.0040.00418.10
8.1.170.0000.00818.51
8.1.160.0000.00720.87
8.1.150.0000.00718.85
8.1.140.0040.00419.55
8.1.130.0000.00717.50
8.1.120.0030.00317.39
8.1.110.0080.00417.38
8.1.100.0040.00417.25
8.1.90.0000.00717.42
8.1.80.0000.00717.28
8.1.70.0000.00717.26
8.1.60.0060.00317.50
8.1.50.0040.00417.45
8.1.40.0000.00717.35
8.1.30.0040.00417.57
8.1.20.0060.00317.43
8.1.10.0000.00817.31
8.1.00.0000.00817.38
8.0.300.0000.00718.77
8.0.290.0030.00616.75
8.0.280.0000.00718.39
8.0.270.0080.00017.17
8.0.260.0000.00617.25
8.0.250.0030.00316.84
8.0.240.0030.00316.94
8.0.230.0100.00016.87
8.0.220.0040.00416.81
8.0.210.0040.00416.86
8.0.200.0000.00816.97
8.0.190.0070.00016.84
8.0.180.0080.00016.75
8.0.170.0080.00016.92
8.0.160.0040.00416.85
8.0.150.0000.01116.72
8.0.140.0000.00716.81
8.0.130.0060.00013.34
8.0.120.0040.00416.89
8.0.110.0080.00016.87
8.0.100.0070.00016.85
8.0.90.0050.00216.78
8.0.80.0090.00616.80
8.0.70.0050.00316.82
8.0.60.0000.00716.88
8.0.50.0030.00316.73
8.0.30.0090.01317.05
8.0.20.0080.01117.40
8.0.10.0040.00416.88
8.0.00.0090.00916.71
7.4.330.0000.00615.08
7.4.320.0030.00316.38
7.4.300.0000.00616.48
7.4.290.0070.00016.33
7.4.280.0030.00616.43
7.4.270.0000.00716.49
7.4.260.0000.00716.52
7.4.250.0040.00416.51
7.4.240.0030.00316.38
7.4.230.0000.00816.61
7.4.220.0070.01816.45
7.4.210.0000.01316.40
7.4.200.0000.00716.33
7.4.160.0160.00016.37
7.4.150.0130.00617.40
7.4.140.0130.00817.86
7.4.130.0080.01116.49
7.4.120.0080.01116.37
7.4.110.0080.00816.52
7.4.100.0060.01516.36
7.4.90.0040.01216.38
7.4.80.0090.00819.39
7.4.70.0060.01116.41
7.4.60.0110.00716.50
7.4.50.0040.01116.57
7.4.40.0090.00916.45
7.4.30.0130.00316.37
7.4.10.0070.01315.12
7.4.00.0080.00814.96
7.3.330.0020.00213.02
7.3.320.0000.00613.11
7.3.310.0070.00016.23
7.3.300.0000.00616.02
7.3.290.0070.00716.20
7.3.280.0080.00816.22
7.3.270.0110.00617.40
7.3.260.0130.01016.21
7.3.250.0090.00916.30
7.3.240.0110.00616.28
7.3.230.0070.01016.51
7.3.210.0050.01116.16
7.3.200.0100.01016.24
7.3.190.0110.00516.24
7.3.180.0070.01016.13
7.3.170.0130.01016.37
7.3.160.0060.01116.20
7.3.130.0120.00614.74
7.3.120.0040.01414.81
7.3.110.0060.01314.66
7.3.100.0130.00014.63
7.3.90.0110.00014.64
7.3.80.0090.00614.57
7.3.70.0120.00014.71
7.3.60.0030.00614.86
7.3.50.0090.00614.63
7.3.40.0070.01014.79
7.3.30.0040.01114.70
7.3.20.0040.00816.59
7.3.10.0030.00916.58
7.3.00.0040.01116.48
7.2.330.0060.01316.26
7.2.320.0070.01116.52
7.2.310.0100.01616.49
7.2.300.0060.01016.54
7.2.290.0200.00316.45
7.2.260.0060.01314.86
7.2.250.0040.01514.85
7.2.240.0000.01314.88
7.2.230.0030.01014.88
7.2.220.0100.01014.89
7.2.210.0000.00914.74
7.2.200.0090.00015.07
7.2.190.0110.00414.89
7.2.180.0030.01214.76
7.2.170.0070.01014.84
7.2.160.0030.01014.64
7.2.150.0060.00616.90
7.2.140.0070.00716.64
7.2.130.0100.00616.63
7.2.120.0040.00916.72
7.2.110.0030.00816.90
7.2.100.0050.00816.63
7.2.90.0080.00416.64
7.2.80.0060.00816.76
7.2.70.0100.00416.63
7.2.60.0100.00516.68
7.2.50.0060.00616.79
7.2.40.0060.00516.86
7.2.30.0000.01116.56
7.2.20.0080.00816.85
7.2.10.0050.00516.82
7.2.00.0030.00917.47
7.1.330.0030.01015.79
7.1.320.0110.00415.68
7.1.310.0000.01215.89
7.1.300.0030.00915.73
7.1.290.0070.01015.96
7.1.280.0030.01315.74
7.1.270.0040.00815.78
7.1.260.0070.00715.77
7.1.250.0060.00415.77
7.1.240.0030.00915.77
7.1.230.0000.01315.79
7.1.220.0090.00615.81
7.1.210.0040.01415.86
7.1.200.0060.00615.80
7.1.190.0100.00615.72
7.1.180.0030.01015.81
7.1.170.0030.01215.62
7.1.160.0000.01315.88
7.1.150.0100.00715.74
7.1.140.0030.00715.43
7.1.130.0000.01215.87
7.1.120.0040.01115.69
7.1.110.0040.00715.59
7.1.100.0020.01017.12
7.1.90.0040.00815.67
7.1.80.0060.00615.67
7.1.70.0040.00916.52
7.1.60.0050.01218.14
7.1.50.0070.00715.50
7.1.40.0000.01015.76
7.1.30.0030.01215.72
7.1.20.0090.00315.63
7.1.10.0110.01115.45
7.1.00.0060.04219.10
7.0.330.0120.00015.50
7.0.320.0100.00615.28
7.0.310.0040.00415.39
7.0.300.0060.00615.38
7.0.290.0000.01415.28
7.0.280.0070.00715.46
7.0.270.0100.00315.36
7.0.260.0060.00315.32
7.0.250.0070.00715.33
7.0.240.0090.00015.16
7.0.230.0070.00715.38
7.0.220.0040.01215.58
7.0.210.0000.01315.39
7.0.200.0410.00615.60
7.0.190.0090.00615.43
7.0.180.0030.01015.37
7.0.170.0090.00615.23
7.0.160.0090.00615.39
7.0.150.0130.00015.21
7.0.140.0060.01015.66
7.0.130.0030.00715.15
7.0.120.0070.00715.26
7.0.110.0060.01015.36
7.0.100.0070.00415.23
7.0.90.0060.00615.39
7.0.80.0060.00615.46
7.0.70.0030.01115.12
7.0.60.0050.03318.46
7.0.50.0090.04416.63
7.0.40.0390.03316.73
7.0.30.0280.04016.92
7.0.20.0450.03016.73
7.0.10.0420.03516.73
7.0.00.0140.02916.74
5.6.400.0080.00314.26
5.6.390.0090.00614.10
5.6.380.0150.00314.30
5.6.370.0000.00914.50
5.6.360.0030.00514.50
5.6.350.0110.00414.32
5.6.340.0070.00714.33
5.6.330.0000.01614.09
5.6.320.0040.00714.33
5.6.310.0000.01414.44
5.6.300.0030.01014.50
5.6.290.0000.01114.48
5.6.280.0070.03717.60
5.6.270.0070.01014.03
5.6.260.0060.00614.39
5.6.250.0080.00614.34
5.6.240.0040.01114.29
5.6.230.0060.00314.26
5.6.220.0060.00814.08
5.6.210.0130.03817.42
5.6.200.0080.02616.06
5.6.190.0310.03617.54
5.6.180.0350.03017.26
5.6.170.0350.03017.30
5.6.160.0110.03017.28
5.6.150.0120.03017.30
5.6.140.0300.03517.20
5.6.130.0300.03417.47
5.6.120.0070.04517.14
5.6.110.0080.03117.31
5.6.100.0180.03517.14
5.6.90.0380.03617.13
5.6.80.0330.03317.02
5.6.70.0300.03516.98
5.6.60.0320.03516.96
5.6.50.0400.02716.89
5.6.40.0440.02716.84
5.6.30.0410.02616.98
5.6.20.0390.02916.87
5.6.10.0350.04716.79
5.6.00.0380.02516.96
5.5.380.0050.00513.95
5.5.370.0030.01014.00
5.5.360.0040.01214.16
5.5.350.0170.04417.02
5.5.340.0060.04415.83
5.5.330.0290.02917.05
5.5.320.0250.03817.31
5.5.310.0420.02817.19
5.5.300.0250.04117.16
5.5.290.0340.03117.04
5.5.280.0040.03517.10
5.5.270.0050.03217.19
5.5.260.0350.02717.10
5.5.250.0390.02916.96
5.5.240.0310.03716.81
5.5.230.0280.03116.85
5.5.220.0330.03216.67
5.5.210.0410.03116.77
5.5.200.0420.02816.72
5.5.190.0330.02816.72
5.5.180.0430.03116.69
5.5.170.0030.00913.93
5.5.160.0360.02716.52
5.5.150.0310.03616.69
5.5.140.0420.02716.73
5.5.130.0300.03316.66
5.5.120.0350.02816.64
5.5.110.0320.03316.75
5.5.100.0330.03316.67
5.5.90.0350.03216.67
5.5.80.0280.04016.66
5.5.70.0410.04016.58
5.5.60.0300.03116.69
5.5.50.0350.03316.68
5.5.40.0400.02316.64
5.5.30.0500.02516.76
5.5.20.0360.02916.62
5.5.10.0320.02916.68
5.5.00.0350.03716.71

preferences:
36.93 ms | 401 KiB | 5 Q