3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr1 = array( 4 => 'a', 'k' => array( 4 => 'a' ) ); $arr2 = array( 5 => 'b', 'k' => array( 5 => 'b' ) ); $arr3 = array_merge_recursive( $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)
8.3.60.0000.01518.18
8.3.50.0120.00317.95
8.3.40.0060.00918.67
8.3.30.0070.00718.46
8.3.20.0080.00019.05
8.3.10.0000.00820.78
8.3.00.0070.00023.48
8.2.180.0110.00716.50
8.2.170.0060.00922.96
8.2.160.0070.00720.20
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0070.00019.70
8.2.120.0070.00026.35
8.2.110.0090.00022.30
8.2.100.0080.00417.72
8.2.90.0040.00417.63
8.2.80.0030.00618.77
8.2.70.0040.00418.04
8.2.60.0000.00817.50
8.2.50.0040.00417.55
8.2.40.0050.00319.17
8.2.30.0040.00419.27
8.2.20.0100.00017.89
8.2.10.0100.00018.05
8.2.00.0030.00319.29
8.1.280.0120.00925.92
8.1.270.0040.00422.01
8.1.260.0000.00826.35
8.1.250.0040.00428.09
8.1.240.0060.00323.85
8.1.230.0080.00418.99
8.1.220.0040.00417.74
8.1.210.0030.00618.77
8.1.200.0060.00317.22
8.1.190.0000.00917.23
8.1.180.0030.00518.10
8.1.170.0050.00219.03
8.1.160.0030.00318.88
8.1.150.0040.00418.72
8.1.140.0000.00717.52
8.1.130.0030.00318.86
8.1.120.0050.00317.25
8.1.110.0000.00717.38
8.1.100.0070.00017.43
8.1.90.0020.00517.35
8.1.80.0050.00217.25
8.1.70.0000.00717.37
8.1.60.0030.00617.57
8.1.50.0030.00517.44
8.1.40.0050.00317.45
8.1.30.0040.00417.56
8.1.20.0040.00417.45
8.1.10.0040.00417.43
8.1.00.0000.00817.39
8.0.300.0000.00718.77
8.0.290.0040.00416.63
8.0.280.0050.00318.30
8.0.270.0030.00317.06
8.0.260.0000.00617.05
8.0.250.0070.00016.84
8.0.240.0050.00316.87
8.0.230.0000.00716.90
8.0.220.0060.00316.78
8.0.210.0070.00016.81
8.0.200.0040.00416.86
8.0.190.0060.00616.83
8.0.180.0030.00316.88
8.0.170.0040.00416.74
8.0.160.0050.00216.88
8.0.150.0070.00016.59
8.0.140.0080.00016.66
8.0.130.0030.00313.26
8.0.120.0040.00416.78
8.0.110.0000.00716.81
8.0.100.0040.00416.80
8.0.90.0000.00716.82
8.0.80.0100.00816.82
8.0.70.0040.00416.81
8.0.60.0040.00416.86
8.0.50.0020.00516.83
8.0.30.0080.01216.86
8.0.20.0100.01217.40
8.0.10.0050.00317.01
8.0.00.0040.01416.53
7.4.330.0040.00015.55
7.4.320.0060.00016.55
7.4.300.0040.00416.37
7.4.290.0080.00016.44
7.4.280.0000.00716.51
7.4.270.0070.00016.36
7.4.260.0040.00416.41
7.4.250.0000.00716.32
7.4.240.0030.00316.48
7.4.230.0030.00316.59
7.4.220.0030.00516.57
7.4.210.0110.00716.52
7.4.200.0070.00016.47
7.4.160.0080.01016.31
7.4.140.0110.01017.86
7.4.130.0100.01416.58
7.4.120.0090.01016.46
7.4.110.0070.01116.49
7.4.100.0170.00016.49
7.4.90.0030.01316.27
7.4.80.0060.01219.39
7.4.70.0090.00916.41
7.4.60.0080.00816.29
7.4.50.0060.01116.41
7.4.40.0110.00716.46
7.4.00.0060.01114.78
7.3.330.0000.00612.96
7.3.320.0050.00012.96
7.3.310.0030.00316.19
7.3.300.0040.00415.98
7.3.290.0030.00316.11
7.3.280.0070.00716.18
7.3.260.0080.01016.18
7.3.240.0090.00916.16
7.3.230.0120.00616.50
7.3.210.0090.00916.02
7.3.200.0060.01116.18
7.3.190.0140.00716.18
7.3.180.0150.00716.48
7.3.170.0060.01116.07
7.3.160.0140.00716.13
7.3.120.0130.00314.88
7.3.110.0140.00414.91
7.3.100.0100.01014.63
7.3.90.0060.01214.54
7.3.80.0070.00714.51
7.3.70.0000.00914.78
7.3.60.0120.00014.71
7.3.50.0090.00014.63
7.3.40.0090.00614.55
7.3.30.0070.01014.63
7.3.20.0060.00616.23
7.3.10.0110.00316.26
7.3.00.0040.01116.40
7.2.330.0100.00716.41
7.2.320.0000.01916.54
7.2.310.0080.00916.20
7.2.300.0040.01416.41
7.2.290.0140.00616.46
7.2.250.0030.01514.77
7.2.240.0090.00914.41
7.2.230.0080.00414.79
7.2.220.0060.00914.65
7.2.210.0070.00714.79
7.2.200.0060.00914.79
7.2.190.0040.01414.82
7.2.180.0090.00614.75
7.2.170.0060.00614.72
7.2.60.0130.01214.90
7.2.50.0710.00814.75
7.2.40.0170.00714.66
7.2.30.0100.01314.73
7.2.20.0170.00815.12
7.2.10.0120.01214.39
7.2.00.0260.01314.56
7.1.330.0070.00715.65
7.1.320.0030.01315.82
7.1.310.0070.00715.76
7.1.300.0000.01615.86
7.1.290.0070.00315.91
7.1.280.0100.00615.68
7.1.270.0040.00415.55
7.1.260.0060.00615.67
7.1.200.0030.00915.46
7.1.170.0160.00613.76
7.1.160.0160.00713.66
7.1.150.0140.00713.66
7.1.140.0210.00313.91
7.1.130.0160.00713.65
7.1.120.0250.00713.50
7.1.110.0180.00813.55
7.1.100.0100.01313.73
7.1.90.0120.01214.05
7.1.80.0100.01413.93
7.1.70.0140.00813.95
7.1.60.0520.00632.00
7.1.50.0300.01231.92
7.1.40.0510.01031.76
7.1.30.0750.00631.35
7.1.20.0450.00631.55
7.1.10.0240.00613.66
7.1.00.0190.00313.95
7.0.300.0190.00413.22
7.0.290.0150.01213.34
7.0.270.0170.01413.43
7.0.260.0290.00013.41
7.0.250.0250.00313.25
7.0.240.0220.00613.69
7.0.230.0260.00413.33
7.0.220.0240.00313.66
7.0.210.0160.01613.39
7.0.200.0300.00013.40
7.0.190.0170.01013.53
7.0.180.0150.01513.32
7.0.170.0260.00513.46
7.0.160.0300.00313.61
7.0.150.0210.00513.71
7.0.140.0450.01413.36
7.0.130.0240.00713.58
7.0.120.0220.00613.59
7.0.110.0180.01213.41
7.0.100.0160.01013.51
7.0.90.0210.00513.47
7.0.80.0170.00913.40
7.0.70.0160.00813.36
7.0.60.0250.00013.29
7.0.50.0180.00513.60
7.0.40.0220.00313.46
7.0.30.0150.00813.58
7.0.20.0190.00613.63
7.0.10.0250.00013.35
7.0.00.0130.01313.46
5.6.300.0070.00713.86
5.6.290.0110.01114.14
5.6.280.0140.00713.93
5.6.270.0090.00914.42
5.6.260.0180.00014.18
5.6.250.0060.01614.09
5.6.240.0070.01114.29
5.6.230.0100.00814.21
5.6.220.0150.00414.36
5.6.210.0150.00514.22
5.6.200.0090.00914.25
5.6.190.0090.00914.29
5.6.180.0150.00413.93
5.6.170.0120.00813.95
5.6.160.0090.01214.27
5.6.150.0110.00814.15
5.6.140.0110.00814.29
5.6.130.0120.00614.17
5.6.120.0090.00914.08
5.6.110.0090.00914.13
5.6.100.0140.00414.31
5.6.90.0120.00614.00
5.6.80.0080.01214.21
5.6.70.0170.00713.96
5.6.60.0140.00714.09
5.6.50.0110.00713.88
5.6.40.0110.01113.83
5.6.30.0100.01013.98
5.6.20.0080.01714.16
5.6.10.0110.00613.95
5.6.00.0090.00914.07
5.5.380.0000.01410.79
5.5.370.0070.00710.88
5.5.360.0030.01110.68
5.5.350.0050.00810.86
5.5.340.0000.01511.08
5.5.330.0140.00310.72
5.5.320.0140.00011.11
5.5.310.0140.00410.77
5.5.300.0070.00710.95
5.5.290.0130.00411.00
5.5.280.0080.00610.83
5.5.270.0080.00610.98
5.5.260.0070.00710.77
5.5.250.0050.00910.82
5.5.240.0050.01110.53
5.5.230.0120.00610.80
5.5.220.0000.01510.61
5.5.210.0070.00810.95
5.5.200.0090.00910.92
5.5.190.0050.00910.96
5.5.180.0080.01210.66
5.5.160.0080.00510.93
5.5.150.0060.00810.94
5.5.140.0070.00710.54
5.5.130.0090.00511.11
5.5.120.0000.01510.69
5.5.110.0100.00311.02
5.5.100.0070.00710.84
5.5.90.0090.00510.91
5.5.80.0060.00910.97
5.5.70.0040.00910.68
5.5.60.0080.00510.81
5.5.50.0090.00310.90
5.5.40.0040.00910.75
5.5.30.0080.00410.67
5.5.20.0090.00410.95
5.5.10.0110.00310.57
5.5.00.0080.00810.84
5.4.450.0120.00210.96
5.4.440.0090.00310.94
5.4.430.0090.00311.09
5.4.420.0070.00710.98
5.4.410.0060.01210.64
5.4.400.0130.00510.78
5.4.390.0140.00011.06
5.4.380.0170.00010.72
5.4.370.0120.00510.60
5.4.360.0070.00710.82
5.4.350.0050.00910.84
5.4.340.0140.00510.87
5.4.320.0070.00710.83
5.4.310.0040.00911.07
5.4.300.0070.00710.82
5.4.290.0120.00210.66
5.4.280.0080.00411.00
5.4.270.0110.00610.49
5.4.260.0130.00010.81
5.4.250.0070.00710.50
5.4.240.0090.00611.18
5.4.230.0100.00310.66
5.4.220.0100.00410.77
5.4.210.0110.00310.90
5.4.200.0050.01110.82
5.4.190.0040.00910.73
5.4.180.0100.00310.82
5.4.170.0090.00410.58
5.4.160.0130.00010.64
5.4.150.0120.00210.64
5.4.140.0120.00310.70
5.4.130.0100.00510.62
5.4.120.0140.00210.84
5.4.110.0040.01110.77
5.4.100.0110.00611.09
5.4.90.0100.00310.83
5.4.80.0130.00011.02
5.4.70.0080.00510.99
5.4.60.0100.00310.53
5.4.50.0070.00510.64
5.4.40.0100.00310.91
5.4.30.0070.00710.93
5.4.20.0070.00710.95
5.4.10.0050.00810.97
5.4.00.0070.00710.90
5.3.290.0130.00010.54
5.3.280.0080.00510.34
5.3.270.0060.00610.29
5.3.260.0160.00010.17
5.3.250.0030.01110.23
5.3.240.0080.00810.21
5.3.230.0070.00710.29
5.3.220.0110.00310.28
5.3.210.0060.01110.32
5.3.200.0100.00710.30
5.3.190.0100.00310.29
5.3.180.0060.00610.36
5.3.170.0050.00810.41
5.3.160.0060.00610.41
5.3.150.0100.00410.46
5.3.140.0130.00310.40
5.3.130.0070.00510.18
5.3.120.0040.00810.34
5.3.110.0130.00010.39
5.3.100.0030.01210.33
5.3.90.0070.00710.40
5.3.80.0060.00610.23
5.3.70.0050.00710.23
5.3.60.0060.00610.38
5.3.50.0060.00710.20
5.3.40.0080.00410.25
5.3.30.0090.00310.38
5.3.20.0080.00410.41
5.3.10.0060.00610.11
5.3.00.0040.00810.13
5.2.170.0080.0039.35
5.2.160.0060.0069.42
5.2.150.0080.0069.47
5.2.140.0050.0059.41
5.2.130.0080.0039.11
5.2.120.0070.0049.25
5.2.110.0030.0069.40
5.2.100.0040.0069.30
5.2.90.0090.0029.23
5.2.80.0080.0039.25
5.2.70.0110.0009.00
5.2.60.0110.0009.18
5.2.50.0120.0009.10
5.2.40.0000.0139.21
5.2.30.0100.0009.26
5.2.20.0070.0039.27
5.2.10.0090.0008.96
5.2.00.0070.0039.06
5.1.60.0040.0048.16
5.1.50.0090.0008.27
5.1.40.0040.0048.48
5.1.30.0110.0008.49
5.1.20.0030.0098.63
5.1.10.0080.0048.45
5.1.00.0090.0008.27
5.0.50.0080.0007.63
5.0.40.0070.0007.63
5.0.30.0000.0087.63
5.0.20.0070.0007.63
5.0.10.0000.0077.63
5.0.00.0070.0007.63
4.4.90.0020.0047.63
4.4.80.0070.0007.63
4.4.70.0060.0037.63
4.4.60.0000.0087.63
4.4.50.0020.0047.63
4.4.40.0000.0067.63
4.4.30.0060.0007.63
4.4.20.0030.0037.63
4.4.10.0000.0067.63
4.4.00.0060.0007.63
4.3.110.0040.0027.63
4.3.100.0060.0007.63
4.3.90.0000.0067.63
4.3.80.0060.0007.63
4.3.70.0050.0007.63
4.3.60.0030.0037.63
4.3.50.0040.0037.63
4.3.40.0030.0037.63
4.3.30.0030.0037.63
4.3.20.0070.0007.63
4.3.10.0000.0057.63
4.3.00.0050.0007.63

preferences:
72.51 ms | 401 KiB | 5 Q