3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = array( array( 0 => array( 'one' => 1, 'two' => 2 ), 1 => array( 'three' => 1 ) ), array( 0 => array( 'one1' => 1, 'two1' => 2 ), 1 => array( 'three1' => 1 ) ) ); foreach($a as $child){ $flatten[] = array_merge(...$child); } print_r($flatten);

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)
8.5.10.0130.00518.77
8.5.00.0110.01119.90
8.4.150.0010.00014.05
8.4.140.0110.01017.56
8.4.130.0110.00919.15
8.4.120.0130.00824.02
8.4.110.0140.00622.25
8.4.100.0120.00718.65
8.4.90.0050.00618.92
8.4.80.0130.00620.31
8.4.70.0060.00219.51
8.4.60.0070.00418.73
8.4.50.0120.00818.54
8.4.40.0200.00017.53
8.4.30.0130.00618.52
8.4.20.0040.01218.02
8.4.10.0070.01318.75
8.3.280.0090.01018.31
8.3.270.0070.01216.78
8.3.260.0080.01116.45
8.3.250.0100.00918.68
8.3.240.0140.00417.22
8.3.230.0060.00516.77
8.3.220.0130.00518.84
8.3.210.0130.00618.43
8.3.200.0070.00216.71
8.3.190.0120.00616.99
8.3.180.0090.01116.90
8.3.170.0040.01520.88
8.3.160.0140.00317.43
8.3.150.0130.00917.16
8.3.140.0000.00817.29
8.3.130.0050.00318.36
8.3.120.0170.00018.84
8.3.110.0070.00320.94
8.3.100.0060.00324.06
8.3.90.0060.00326.77
8.3.80.0060.00316.63
8.3.70.0120.00816.88
8.3.60.0130.00618.55
8.3.50.0110.00523.63
8.3.40.0040.01118.89
8.3.30.0110.00418.61
8.3.20.0050.00320.73
8.3.10.0040.00420.30
8.3.00.0040.00420.64
8.2.290.0110.00820.13
8.2.280.0090.01018.25
8.2.270.0150.00316.55
8.2.260.0070.01016.71
8.2.250.0040.00418.23
8.2.240.0070.00317.25
8.2.230.0030.00722.58
8.2.220.0120.00637.54
8.2.210.0150.00026.77
8.2.200.0060.00316.63
8.2.190.0070.00716.63
8.2.180.0040.01118.29
8.2.170.0170.00322.96
8.2.160.0100.00320.40
8.2.150.0030.00624.18
8.2.140.0040.00424.66
8.2.130.0070.00026.16
8.2.120.0060.00318.04
8.2.110.0060.00320.39
8.2.100.0060.00617.72
8.2.90.0050.00318.03
8.2.80.0040.00417.97
8.2.70.0040.00418.05
8.2.60.0060.00318.28
8.2.50.0000.00719.21
8.2.40.0060.00321.03
8.2.30.0070.00019.21
8.2.20.0020.00518.06
8.2.10.0040.00419.18
8.2.00.0000.00719.40
8.1.330.0110.00721.86
8.1.320.0120.00916.01
8.1.310.0000.00816.19
8.1.300.0090.00919.94
8.1.290.0030.00630.84
8.1.280.0070.01125.92
8.1.270.0080.00022.01
8.1.260.0040.00426.35
8.1.250.0000.00828.09
8.1.240.0070.00322.54
8.1.230.0070.00422.73
8.1.220.0030.00617.74
8.1.210.0080.00318.77
8.1.200.0060.00317.35
8.1.190.0050.00317.35
8.1.180.0000.00719.03
8.1.170.0000.01118.68
8.1.160.0050.00218.99
8.1.150.0060.00318.88
8.1.140.0040.00418.85
8.1.130.0030.00620.17
8.1.120.0070.00518.06
8.1.110.0080.00118.02
8.1.100.0040.00618.06
8.1.90.0070.00418.03
8.1.80.0050.00518.07
8.1.70.0110.00218.10
8.1.60.0080.00518.02
8.1.50.0100.00517.95
8.1.40.0060.00818.56
8.1.30.0090.00617.99
8.1.20.0070.00717.99
8.1.10.0100.00517.76
8.1.00.0080.00617.74
8.0.300.0040.00420.04
8.0.290.0040.00416.75
8.0.280.0070.00018.34
8.0.270.0030.00416.80
8.0.260.0020.00519.99
8.0.250.0040.00617.40
8.0.240.0110.00217.40
8.0.230.0060.00717.50
8.0.220.0070.00517.36
8.0.210.0050.00617.40
8.0.200.0080.00317.45
8.0.190.0060.00517.30
8.0.180.0070.00417.21
8.0.170.0070.00617.23
8.0.160.0090.00417.24
8.0.150.0070.00617.17
8.0.140.0100.00317.18
8.0.130.0050.00715.97
8.0.120.0100.00217.22
8.0.110.0060.00717.12
8.0.100.0100.00217.28
8.0.90.0080.00417.19
8.0.80.0050.00817.13
8.0.70.0060.00617.24
8.0.60.0090.00317.27
8.0.50.0030.00917.21
8.0.30.0110.00317.30
8.0.20.0100.00617.21
8.0.10.0080.00417.35
8.0.00.0080.00517.24
7.4.330.0060.00314.77
7.4.320.0110.00017.12
7.4.300.0070.00417.08
7.4.290.0060.00716.94
7.4.280.0070.00616.86
7.4.270.0100.00216.92
7.4.260.0100.00215.78
7.4.250.0040.00916.92
7.4.240.0050.00616.86
7.4.230.0090.00416.89
7.4.220.0030.00716.70
7.4.210.0060.00916.66
7.4.200.0110.00116.86
7.4.190.0090.00617.06
7.4.180.0100.00517.05
7.4.160.0090.00517.08
7.4.150.0080.00516.99
7.4.140.0120.00116.99
7.4.130.0120.00516.70
7.4.120.0100.00616.73
7.4.110.0120.00216.82
7.4.100.0080.00516.84
7.4.90.0080.00517.40
7.4.80.0040.01018.27
7.4.70.0050.00616.82
7.4.60.0070.00716.81
7.4.50.0080.00216.74
7.4.40.0090.00416.84
7.4.30.0030.01017.40
7.4.20.0070.00616.81
7.4.10.0070.00616.76
7.4.00.0060.00416.83
7.3.330.0050.00716.61
7.3.320.0060.00615.64
7.3.310.0090.00316.62
7.3.300.0070.00516.68
7.3.290.0080.00816.48
7.3.280.0060.00916.59
7.3.270.0070.00316.55
7.3.260.0150.00116.75
7.3.250.0120.00316.86
7.3.240.0110.00616.58
7.3.230.0100.00716.73
7.3.220.0110.00316.63
7.3.210.0110.00516.49
7.3.200.0100.00516.56
7.3.190.0100.00616.57
7.3.180.0050.01016.63
7.3.170.0090.00716.61
7.3.160.0120.00516.67
7.3.150.0080.00816.52
7.3.140.0130.00316.64
7.3.130.0110.00616.69
7.3.120.0110.00516.64
7.3.110.0090.00816.54
7.3.100.0060.01016.52
7.3.90.0080.00816.73
7.3.80.0110.00616.46
7.3.70.0120.00316.68
7.3.60.0110.00416.75
7.3.50.0090.00716.81
7.3.40.0110.00616.76
7.3.30.0110.00616.67
7.3.20.0080.00717.89
7.3.10.0110.00617.96
7.3.00.0100.00517.94
7.2.340.0070.00716.79
7.2.330.0090.00816.79
7.2.320.0070.00816.86
7.2.310.0080.00716.82
7.2.300.0090.00716.71
7.2.290.0110.00516.78
7.2.280.0100.00716.73
7.2.270.0080.00816.60
7.2.260.0100.00716.69
7.2.250.0080.00916.84
7.2.240.0080.00716.80
7.2.230.0090.00816.67
7.2.220.0100.00516.83
7.2.210.0110.00616.77
7.2.200.0130.00516.80
7.2.190.0090.00616.89
7.2.180.0110.00616.79
7.2.170.0120.00516.86
7.2.160.0090.00816.94
7.2.150.0100.00718.16
7.2.140.0090.00518.09
7.2.130.0080.00718.19
7.2.120.0100.00518.17
7.2.110.0120.00518.14
7.2.100.0120.00618.21
7.2.90.0140.00418.12
7.2.80.0090.00618.13
7.2.70.0110.00718.17
7.2.60.0070.00918.24
7.2.50.0060.00918.20
7.2.40.0090.00618.16
7.2.30.0080.00718.15
7.2.20.0080.00718.26
7.2.10.0140.00318.17
7.2.00.0130.00518.16

preferences:
158.72 ms | 403 KiB | 5 Q