3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr1 = [ 2 => [ 1, 2, 3 ] ]; $arr2 = [ 3 => [ 2, 3, 4 ] ]; $arr3 = array_merge($arr1, $arr2); var_dump($arr3);

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)
8.3.60.0100.00718.18
8.3.50.0110.00921.04
8.3.40.0140.00718.57
8.3.30.0100.00718.82
8.3.20.0040.00420.07
8.3.10.0030.00623.66
8.3.00.0070.00417.25
8.2.180.0130.00616.38
8.2.170.0070.00722.96
8.2.160.0100.00620.26
8.2.150.0060.00324.18
8.2.140.0000.00824.66
8.2.130.0040.00426.16
8.2.120.0040.00422.22
8.2.110.0050.00520.20
8.2.100.0080.00418.09
8.2.90.0030.00619.09
8.2.80.0060.00317.97
8.2.70.0040.00417.38
8.2.60.0040.00417.91
8.2.50.0050.00318.07
8.2.40.0000.00919.80
8.2.30.0070.00018.04
8.2.20.0060.00317.48
8.2.10.0000.00818.07
8.2.00.0030.00517.66
8.1.280.0140.00325.92
8.1.270.0030.00623.82
8.1.260.0040.00426.35
8.1.250.0070.00028.09
8.1.240.0090.00023.79
8.1.230.0070.00419.16
8.1.220.0060.00317.74
8.1.210.0000.00718.77
8.1.200.0030.00617.22
8.1.190.0060.00317.22
8.1.180.0000.00818.10
8.1.170.0050.00318.52
8.1.160.0040.00421.94
8.1.150.0070.00018.82
8.1.140.0040.00417.29
8.1.130.0070.00017.73
8.1.120.0040.00417.42
8.1.110.0040.00417.38
8.1.100.0000.00717.36
8.1.90.0030.00517.38
8.1.80.0000.00717.27
8.1.70.0030.00317.30
8.1.60.0040.00417.53
8.1.50.0040.00417.45
8.1.40.0040.00417.43
8.1.30.0000.00817.55
8.1.20.0040.00417.50
8.1.10.0000.00717.45
8.1.00.0000.00717.34
8.0.300.0040.00418.77
8.0.290.0000.00816.63
8.0.280.0030.00318.38
8.0.270.0070.00017.11
8.0.260.0060.00017.20
8.0.250.0000.00616.87
8.0.240.0000.00716.93
8.0.230.0030.00316.93
8.0.220.0030.00516.80
8.0.210.0030.00316.82
8.0.200.0000.00616.81
8.0.190.0080.00016.89
8.0.180.0070.00016.76
8.0.170.0080.00016.88
8.0.160.0040.00416.87
8.0.150.0000.00816.68
8.0.140.0050.00316.67
8.0.130.0030.00313.28
8.0.120.0000.00916.66
8.0.110.0000.00716.72
8.0.100.0040.00416.86
8.0.90.0050.00216.88
8.0.80.0170.00316.75
8.0.70.0000.00716.75
8.0.60.0070.00016.84
8.0.50.0040.00416.84
8.0.30.0110.01116.91
8.0.20.0100.01017.40
8.0.10.0040.00416.88
8.0.00.0070.01116.85
7.4.330.0020.00215.00
7.4.320.0070.00016.46
7.4.300.0030.00316.47
7.4.290.0000.00616.41
7.4.280.0000.00716.37
7.4.270.0060.00016.52
7.4.260.0030.00316.40
7.4.250.0040.00416.48
7.4.240.0020.00616.39
7.4.230.0070.00016.63
7.4.220.0140.01216.32
7.4.210.0080.00816.59
7.4.200.0000.00716.64
7.4.160.0070.01016.49
7.4.150.0070.01517.40
7.4.140.0130.00817.86
7.4.130.0110.00916.50
7.4.120.0080.01116.38
7.4.110.0090.00916.35
7.4.100.0120.00616.39
7.4.90.0120.00416.30
7.4.80.0090.01219.39
7.4.70.0050.01116.19
7.4.60.0030.01316.46
7.4.50.0000.00416.58
7.4.40.0090.00916.40
7.4.30.0110.01116.51
7.4.10.0160.00314.66
7.4.00.0040.01315.00
7.3.330.0020.00213.15
7.3.320.0000.00513.02
7.3.310.0000.00716.18
7.3.300.0000.00716.16
7.3.290.0070.00716.19
7.3.280.0100.00616.18
7.3.270.0070.01017.40
7.3.260.0150.00316.27
7.3.250.0110.00916.13
7.3.240.0120.00916.05
7.3.230.0100.00716.50
7.3.210.0060.01116.06
7.3.200.0090.01219.39
7.3.190.0130.00916.45
7.3.180.0030.01616.29
7.3.170.0060.00916.44
7.3.160.0150.00716.49
7.3.130.0040.01514.79
7.3.120.0100.00714.64
7.3.110.0110.00714.57
7.3.100.0070.01014.45
7.3.90.0000.01714.88
7.3.80.0150.00314.96
7.3.70.0090.00614.74
7.3.60.0030.01414.42
7.3.50.0070.01014.62
7.3.40.0080.00814.78
7.3.30.0030.01314.52
7.3.20.0120.00316.64
7.3.10.0110.00216.33
7.3.00.0070.00616.50
7.2.330.0090.00916.49
7.2.320.0110.00516.47
7.2.310.0090.01216.48
7.2.300.0110.00516.39
7.2.290.0030.01416.51
7.2.260.0100.01014.79
7.2.250.0120.00814.83
7.2.240.0080.00814.71
7.2.230.0040.01114.84
7.2.220.0090.00914.69
7.2.210.0060.00615.09
7.2.200.0130.00314.71
7.2.190.0110.00715.07
7.2.180.0040.00715.00
7.2.170.0090.00614.88
7.2.160.0130.00314.84
7.2.150.0070.01016.71
7.2.140.0080.00316.57
7.2.130.0090.00516.50
7.2.120.0040.00916.65
7.2.110.0040.00816.53
7.2.100.0090.00516.62
7.2.90.0040.00916.58
7.2.80.0080.00616.72
7.2.70.0060.00816.75
7.2.60.0050.01016.67
7.2.50.0060.00716.65
7.2.40.0070.00816.71
7.2.30.0070.00516.83
7.2.20.0090.00516.68
7.2.10.0110.00516.64
7.2.00.0080.00717.25
7.1.330.0040.00915.30
7.1.320.0140.00415.42
7.1.310.0100.00315.68
7.1.300.0110.00415.70
7.1.290.0040.00815.72
7.1.280.0080.00415.62
7.1.270.0040.01115.35
7.1.260.0000.01015.63
7.1.250.0080.00515.61
7.1.240.0080.00815.34
7.1.230.0060.00715.66
7.1.220.0070.00715.56
7.1.210.0070.00515.53
7.1.200.0100.00715.53
7.1.190.0080.00415.44
7.1.180.0050.01015.62
7.1.170.0090.00215.55
7.1.160.0060.01015.56
7.1.150.0080.00515.58
7.1.140.0070.00715.76
7.1.130.0060.00515.59
7.1.120.0090.00515.43
7.1.110.0050.01115.50
7.1.100.0080.00616.49
7.1.90.0070.00615.58
7.1.80.0090.00715.67
7.1.70.0070.00516.01
7.1.60.0080.01016.86
7.1.50.0120.00616.04
7.1.40.0070.00615.61
7.1.30.0050.01115.58
7.1.20.0100.00415.53
7.1.10.0060.00615.50
7.1.00.0090.02717.76
7.0.330.0080.00815.04
7.0.320.0100.00315.28
7.0.310.0040.00715.20
7.0.300.0070.00815.07
7.0.290.0100.00315.27
7.0.280.0090.00515.01
7.0.270.0020.01115.11
7.0.260.0070.00715.20
7.0.250.0100.00415.13
7.0.240.0080.00515.06
7.0.230.0030.00915.17
7.0.220.0100.00315.40
7.0.210.0060.00815.28
7.0.200.0030.00915.75
7.0.190.0110.00315.25
7.0.180.0030.00915.24
7.0.170.0090.00715.35
7.0.160.0070.00715.33
7.0.150.0080.00915.16
7.0.140.0080.02917.49
7.0.130.0070.00815.28
7.0.120.0060.00715.35
7.0.110.0080.00515.18
7.0.100.0050.01015.21
7.0.90.0070.00715.12
7.0.80.0050.00915.28
7.0.70.0070.00814.99
7.0.60.0100.02416.73
7.0.50.0130.01916.18
7.0.40.0050.03015.60
7.0.30.0120.01915.62
7.0.20.0100.01915.51
7.0.10.0110.03215.58
7.0.00.0040.03315.53
5.6.400.0060.00914.03
5.6.390.0000.01214.36
5.6.380.0050.00614.00
5.6.370.0070.00514.06
5.6.360.0070.00714.35
5.6.350.0050.01014.00
5.6.340.0050.00814.41
5.6.330.0080.00714.36
5.6.320.0070.00814.20
5.6.310.0030.01014.09
5.6.300.0090.00314.36
5.6.290.0110.00314.14
5.6.280.0050.02916.39
5.6.270.0090.00514.31
5.6.260.0070.00714.30
5.6.250.0050.01014.10
5.6.240.0090.00914.21
5.6.230.0020.00914.43
5.6.220.0040.00614.16
5.6.210.0040.02716.27
5.6.200.0040.02215.57
5.6.190.0090.02916.33
5.6.180.1170.02116.34
5.6.170.0120.02716.18
5.6.160.0060.02916.34
5.6.150.0040.02015.57
5.6.140.0070.02815.50
5.6.130.0090.02515.41
5.6.120.0070.03316.59
5.6.110.0110.02816.45
5.6.100.0090.03016.41
5.6.90.0030.03416.56
5.6.80.0080.03016.19
5.6.70.0050.01013.94
5.6.60.0070.01113.96
5.6.50.0120.00513.96
5.6.40.0060.01114.11
5.6.30.0080.00813.99
5.6.20.0070.00914.05
5.6.10.0070.00414.06
5.6.00.0000.01313.96
5.5.380.0140.00012.42
5.5.370.0030.00612.40
5.5.360.0030.00812.43
5.5.350.0110.03015.08
5.5.340.0030.03414.20
5.5.330.0050.01915.05
5.5.320.0140.03015.06
5.5.310.0100.02215.06
5.5.300.0060.03114.27
5.5.290.0060.02314.26
5.5.280.0090.02115.20
5.5.270.0060.02015.30
5.5.260.0090.02315.13
5.5.250.0060.02615.21
5.5.240.0060.02014.91
5.5.230.0050.00712.23
5.5.220.0060.00412.51
5.5.210.0050.00812.29
5.5.200.0050.00512.46
5.5.190.0050.00712.46
5.5.180.0110.00412.58
5.5.170.0020.01112.40
5.5.160.0110.00012.50
5.5.150.0080.00712.56
5.5.140.0080.00512.49
5.5.130.0030.00812.41
5.5.120.0060.00612.61
5.5.110.0030.00812.51
5.5.100.0030.00612.31
5.5.90.0070.00612.44
5.5.80.0020.01312.44
5.5.70.0090.00512.25
5.5.60.0050.00912.21
5.5.50.0080.00312.42
5.5.40.0050.00812.45
5.5.30.0030.00912.46
5.5.20.0060.00512.29
5.5.10.0020.01312.27
5.5.00.0030.00712.28
5.4.450.0510.02213.77
5.4.440.0210.02213.46
5.4.430.0270.02013.61
5.4.420.0280.00013.69
5.4.410.0230.00613.69
5.4.400.0280.00213.62
5.4.390.0250.00313.42
5.4.380.0290.00313.56
5.4.370.0230.00713.57
5.4.360.0220.00713.60
5.4.350.0240.00613.54
5.4.340.0030.02011.04
5.4.330.0030.00910.69
5.4.320.0060.01711.36
5.4.310.0050.01811.53
5.4.300.0070.01611.43
5.4.290.0080.01711.36
5.4.280.0070.01611.27
5.4.270.0080.01611.41
5.4.260.0070.01611.35
5.4.250.0070.01711.21
5.4.240.0080.01711.29
5.4.230.0050.01911.28
5.4.220.0100.01411.22
5.4.210.0070.01711.31
5.4.200.0070.01711.31
5.4.190.0090.01811.37
5.4.180.0090.01411.28
5.4.170.0090.01611.38
5.4.160.0070.01611.25
5.4.150.0060.01711.39
5.4.140.0050.01711.22
5.4.130.0080.01611.25
5.4.120.0040.01911.23
5.4.110.0060.01711.10
5.4.100.0060.01611.21
5.4.90.0060.01611.26
5.4.80.0060.01511.22
5.4.70.0070.01811.22
5.4.60.0020.01811.24
5.4.50.0040.01511.20
5.4.40.0040.01611.22
5.4.30.0030.01911.16
5.4.20.0040.01611.27
5.4.10.0060.01711.18
5.4.00.0040.01610.96
5.3.290.0020.02911.75
5.3.280.0080.02311.71
5.3.270.0060.02411.72
5.3.260.0080.02411.71
5.3.250.0060.02711.71
5.3.240.0070.02311.71
5.3.230.0100.02011.71
5.3.220.0060.02411.69
5.3.210.0070.02311.70
5.3.200.0070.02211.69
5.3.190.0110.01911.69
5.3.180.0080.02211.69
5.3.170.0040.02311.69
5.3.160.0070.01911.69
5.3.150.0040.01911.69
5.3.140.0070.01811.69
5.3.130.0030.02311.68
5.3.120.0060.02011.68
5.3.110.0060.02211.68
5.3.100.0040.02211.41
5.3.90.0050.02411.39
5.3.80.0040.02311.39
5.3.70.0050.02111.39
5.3.60.0080.01811.38
5.3.50.0040.02211.36
5.3.40.0050.02211.36
5.3.30.0040.02011.33
5.3.20.0090.02111.21
5.3.10.0040.02111.20
5.3.00.0050.02011.20
5.2.170.0020.0209.95
5.2.160.0040.0189.94
5.2.150.0060.0179.94
5.2.140.0040.0189.94
5.2.130.0020.0209.92
5.2.120.0020.0189.92
5.2.110.0080.0149.93
5.2.100.0040.0199.93
5.2.90.0020.0209.93
5.2.80.0050.0179.92
5.2.70.0030.0199.92
5.2.60.0030.0179.90
5.2.50.0060.0169.88
5.2.40.0070.0139.87
5.2.30.0050.0169.86
5.2.20.0050.0179.86
5.2.10.0050.0189.82
5.2.00.0020.0189.74
5.1.60.0030.0139.38
5.1.50.0010.0169.38
5.1.40.0030.0169.38
5.1.30.0040.0159.55
5.1.20.0040.0199.56
5.1.10.0050.0149.42
5.1.00.0020.0199.42
5.0.50.0060.0108.66
5.0.40.0020.0138.59
5.0.30.0040.0168.50
5.0.20.0030.0158.48
5.0.10.0010.0158.47
5.0.00.0030.0178.47
4.4.90.0020.0097.74
4.4.80.0040.0097.73
4.4.70.0030.0107.73
4.4.60.0020.0157.73
4.4.50.0020.0117.74
4.4.40.0050.0127.71
4.4.30.0020.0117.73
4.4.20.0050.0087.78
4.4.10.0050.0097.78
4.4.00.0050.0127.73
4.3.110.0020.0107.69
4.3.100.0010.0127.69
4.3.90.0020.0117.67
4.3.80.0030.0167.64
4.3.70.0020.0107.67
4.3.60.0020.0107.67
4.3.50.0040.0097.66
4.3.40.0020.0137.62
4.3.30.0020.0116.99
4.3.20.0040.0096.98
4.3.10.0010.0106.96
4.3.00.0250.01511.67

preferences:
29.26 ms | 401 KiB | 5 Q