3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = array( '0' => 'null' ); $b = array( 0 => 'zero' ); var_dump($a); var_dump($b); var_dump(array_merge($a, $b)); var_dump(array_merge($b, $a)); var_dump($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)
8.3.60.0080.00818.30
8.3.50.0100.00521.21
8.3.40.0150.00018.67
8.3.30.0110.00418.93
8.3.20.0040.00420.20
8.3.10.0000.00822.10
8.3.00.0080.00020.64
8.2.180.0070.01418.16
8.2.170.0120.00622.96
8.2.160.0100.00719.05
8.2.150.0050.00324.18
8.2.140.0000.00824.66
8.2.130.0100.00026.16
8.2.120.0050.00319.25
8.2.110.0030.00620.49
8.2.100.0080.00417.91
8.2.90.0000.00718.96
8.2.80.0090.00017.97
8.2.70.0030.00617.63
8.2.60.0060.00317.80
8.2.50.0030.00518.07
8.2.40.0040.00418.22
8.2.30.0050.00218.05
8.2.20.0040.00417.64
8.2.10.0040.00417.68
8.2.00.0040.00417.66
8.1.280.0110.00325.92
8.1.270.0070.00022.02
8.1.260.0080.00026.35
8.1.250.0040.00428.09
8.1.240.0060.00323.89
8.1.230.0070.00419.15
8.1.220.0040.00417.74
8.1.210.0050.00318.77
8.1.200.0000.00917.22
8.1.190.0040.00417.41
8.1.180.0000.00718.76
8.1.170.0040.00418.57
8.1.160.0030.00322.14
8.1.150.0040.00418.53
8.1.140.0000.00717.33
8.1.130.0070.00017.73
8.1.120.0070.00017.30
8.1.110.0000.00717.38
8.1.100.0070.00017.30
8.1.90.0040.00417.35
8.1.80.0040.00317.30
8.1.70.0000.00617.31
8.1.60.0060.00317.49
8.1.50.0000.00717.33
8.1.40.0030.00517.37
8.1.30.0040.00417.48
8.1.20.0040.00417.48
8.1.10.0040.00417.43
8.1.00.0040.00417.38
8.0.300.0060.00318.77
8.0.290.0030.00417.18
8.0.280.0030.00318.37
8.0.270.0030.00317.09
8.0.260.0060.00016.69
8.0.250.0030.00316.99
8.0.240.0070.00016.84
8.0.230.0030.00316.88
8.0.220.0000.00716.89
8.0.210.0070.00016.86
8.0.200.0000.00616.98
8.0.190.0050.00216.84
8.0.180.0080.00016.96
8.0.170.0070.00016.90
8.0.160.0000.00816.92
8.0.150.0040.00416.71
8.0.140.0030.00516.75
8.0.130.0000.00613.39
8.0.120.0070.00316.77
8.0.110.0040.00416.80
8.0.100.0000.00716.93
8.0.90.0040.00416.82
8.0.80.0160.00616.85
8.0.70.0000.00717.00
8.0.60.0000.00716.96
8.0.50.0040.00416.66
8.0.30.0130.01017.04
8.0.20.0080.01017.40
8.0.10.0000.00816.95
8.0.00.0050.01316.73
7.4.330.0020.00215.00
7.4.320.0030.00316.57
7.4.300.0030.00316.53
7.4.290.0000.00816.38
7.4.280.0070.00016.43
7.4.270.0000.00716.50
7.4.260.0070.00016.34
7.4.250.0040.00416.41
7.4.240.0000.00716.43
7.4.230.0000.00716.51
7.4.220.0120.01216.53
7.4.210.0070.01216.51
7.4.200.0030.00316.18
7.4.190.0040.00416.60
7.4.160.0130.00316.27
7.4.150.0100.00917.40
7.4.140.0120.00717.86
7.4.130.0120.00816.33
7.4.120.0060.01116.28
7.4.110.0090.00916.44
7.4.100.0100.00716.43
7.4.90.0060.01316.55
7.4.80.0090.00919.39
7.4.70.0140.00316.19
7.4.60.0090.00616.59
7.4.50.0000.00916.05
7.4.40.0090.00422.77
7.4.30.0170.00016.44
7.4.00.0080.00814.73
7.3.330.0030.00313.04
7.3.320.0000.00512.91
7.3.310.0050.00216.26
7.3.300.0000.00616.21
7.3.290.0100.00716.23
7.3.280.0080.00716.21
7.3.270.0030.01317.40
7.3.260.0050.01316.45
7.3.250.0120.00916.40
7.3.240.0040.01416.23
7.3.230.0140.00316.39
7.3.210.0090.00916.19
7.3.200.0100.00619.39
7.3.190.0100.01016.54
7.3.180.0110.00416.05
7.3.170.0130.00416.41
7.3.160.0060.01016.55
7.3.120.0120.00314.72
7.3.110.0100.00314.99
7.3.100.0110.00714.39
7.3.90.0060.00914.81
7.3.80.0100.00714.85
7.3.70.0060.00614.71
7.3.60.0070.01014.85
7.3.50.0100.00714.61
7.3.40.0100.00314.88
7.3.30.0070.00714.79
7.3.20.0080.00816.54
7.3.10.0050.01016.34
7.3.00.0050.00816.69
7.2.330.0000.01816.63
7.2.320.0060.01316.67
7.2.310.0100.01316.55
7.2.300.0080.00816.57
7.2.290.0120.00416.66
7.2.250.0110.00615.09
7.2.240.0030.01715.06
7.2.230.0030.00915.04
7.2.220.0100.01014.89
7.2.210.0070.01115.13
7.2.200.0090.00614.61
7.2.190.0060.00914.75
7.2.180.0030.01015.04
7.2.170.0080.00414.76
7.2.130.0030.00916.50
7.2.120.0120.00016.46
7.2.110.0030.00916.90
7.2.100.0050.00516.59
7.2.90.0060.00616.71
7.2.80.0050.00816.81
7.2.70.0060.00616.97
7.2.60.0110.00316.96
7.2.50.0000.01616.66
7.2.40.0070.00716.50
7.2.30.0030.01016.75
7.2.20.0070.00716.67
7.2.10.0000.01516.55
7.2.00.0080.00316.71
7.1.330.0000.01815.95
7.1.320.0040.00815.55
7.1.310.0060.00915.51
7.1.300.0030.01315.82
7.1.290.0060.00615.59
7.1.280.0040.01115.70
7.1.270.0070.00715.83
7.1.260.0060.00915.71
7.1.250.0030.01015.77
7.1.70.0000.00717.12
7.1.60.0130.01019.82
7.1.50.0070.01516.63
7.1.00.0000.07322.51
7.0.200.0060.00316.87
7.0.140.0000.07022.08
7.0.60.0030.04319.82
7.0.50.0030.04317.85
7.0.40.0070.07720.08
7.0.30.0270.07720.17
7.0.20.0230.05320.30
7.0.10.0070.04320.09
7.0.00.0100.05720.30
5.6.280.0000.07721.09
5.6.210.0000.09020.47
5.6.200.0100.04318.18
5.6.190.0200.07020.41
5.6.180.0200.09020.46
5.6.170.0130.04720.71
5.6.160.0100.07720.33
5.6.150.0070.07318.22
5.6.140.0030.04018.18
5.6.130.0070.05718.15
5.6.120.0000.05320.98
5.6.110.0100.07721.13
5.6.100.0130.07321.03
5.6.90.0030.07321.07
5.6.80.0030.08320.27
5.5.350.0100.05320.36
5.5.340.0070.04717.98
5.5.330.0070.04020.21
5.5.320.0230.08020.17
5.5.310.0370.06720.24
5.5.300.0000.07017.95
5.5.290.0070.05717.94
5.5.280.0200.05020.64
5.5.270.0070.03720.85
5.5.260.0170.07720.66
5.5.250.0000.08720.57
5.5.240.0100.06720.27
5.4.450.0800.06019.44
5.4.440.0430.07319.64
5.4.430.0100.05319.43
5.4.420.0070.06019.33
5.4.410.0100.05018.68
5.4.400.0030.06018.68
5.4.390.0130.05018.61
5.4.380.0170.05718.65
5.4.370.0030.06318.48
5.4.360.0230.04018.72
5.4.350.0230.04318.66
5.4.340.0170.04718.49
5.4.320.0060.04412.45
5.4.310.0060.03712.45
5.4.300.0070.04012.45
5.4.290.0090.03412.45
5.4.280.0070.03512.34
5.4.270.0080.04212.34
5.4.260.0030.05318.95
5.4.250.0100.05718.87
5.4.240.0100.05018.87
5.4.230.0100.04718.83
5.4.220.0100.05018.79
5.4.210.0100.04718.88
5.4.200.0070.05018.66
5.4.190.0000.06018.77
5.4.180.0130.07019.00
5.4.170.0130.06319.00
5.4.160.0030.05318.82
5.4.150.0070.05318.69
5.4.140.0030.05716.21
5.4.130.0070.04716.41
5.4.120.0100.06016.40
5.4.110.0130.06016.26
5.4.100.0000.05316.40
5.4.90.0130.06316.40
5.4.80.0130.05316.32
5.4.70.0070.04716.31
5.4.60.0070.05016.27
5.4.50.0100.06716.41
5.4.40.0070.07016.50
5.4.30.0170.04316.27
5.4.20.0070.05016.37
5.4.10.0000.05716.31
5.4.00.0000.05315.70
5.3.290.0060.04012.80
5.3.280.0100.04714.46
5.3.270.0170.06314.43
5.3.260.0000.06314.50
5.3.250.0030.05314.38
5.3.240.0130.04314.38
5.3.230.0100.04714.69
5.3.220.0100.05314.43
5.3.210.0070.06014.45
5.3.200.0070.05314.58
5.3.190.0130.06314.57
5.3.180.0130.06714.58
5.3.170.0070.07314.40
5.3.160.0030.06014.48
5.3.150.0130.04714.33
5.3.140.0070.05014.62
5.3.130.0100.05014.25
5.3.120.0030.05714.46
5.3.110.0100.07014.32
5.3.100.0070.04713.95
5.3.90.0100.06013.93
5.3.80.0030.05014.04
5.3.70.0100.06314.11
5.3.60.0070.04713.86
5.3.50.0100.05013.71
5.3.40.0000.05713.83
5.3.30.0030.07713.92
5.3.20.0030.05313.71
5.3.10.0070.04713.34
5.3.00.0100.04713.73
5.2.170.0100.04311.03
5.2.160.0130.05011.05
5.2.150.0130.03711.16
5.2.140.0000.06710.89
5.2.130.0100.03311.01
5.2.120.0000.04310.93
5.2.110.0030.04011.20
5.2.100.0030.04311.21
5.2.90.0030.04311.01
5.2.80.0100.04311.11
5.2.70.0100.03311.01
5.2.60.0070.04310.95
5.2.50.0070.04710.93
5.2.40.0030.04010.75
5.2.30.0100.03710.99
5.2.20.0000.04310.86
5.2.10.0030.04310.76
5.2.00.0000.04310.88
5.1.60.0030.0509.95
5.1.50.0030.0479.95
5.1.40.0130.03310.16
5.1.30.0100.04310.16
5.1.20.0130.02710.52
5.1.10.0030.03710.15
5.1.00.0000.0509.97
5.0.50.0070.0279.07
5.0.40.0130.0279.07
5.0.30.0030.0409.07
5.0.20.0000.0309.07
5.0.10.0000.0339.07
5.0.00.0070.0379.07
4.4.90.0030.0309.07
4.4.80.0030.0239.07
4.4.70.0130.0209.07
4.4.60.0030.0309.07
4.4.50.0000.0279.07
4.4.40.0030.0339.07
4.4.30.0000.0279.07
4.4.20.0170.0079.07
4.4.10.0030.0209.07
4.4.00.0030.0439.07
4.3.110.0030.0209.07
4.3.100.0100.0239.07
4.3.90.0030.0209.07
4.3.80.0030.0339.07
4.3.70.0000.0309.07
4.3.60.0100.0239.07
4.3.50.0000.0239.07
4.3.40.0000.0339.07
4.3.30.0000.0239.07
4.3.20.0030.0209.07
4.3.10.0100.0139.07
4.3.00.0000.0236.76

preferences:
45.13 ms | 401 KiB | 5 Q