3v4l.org

run code in 300+ PHP versions simultaneously
<?php function flatten_array($array, $flat = array()) { foreach($array as $k=>$v){ $k = strval($k); if(!is_array($v)){ $i = 0; while(true){ $i++; $key = $k.strval($i); if(!isset($flat[$key])) break; } $flat[$key] = $v; unset($array[$k]); }else{ $flat = flatten_array($v, $flat); } } return $flat; } $a = array_fill(0, 10, array_fill(0, 10, 0)); $array = flatten_array($a); var_dump($array);

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)
8.3.60.0070.01016.63
8.3.50.0070.01418.09
8.3.40.0090.00618.84
8.3.30.0040.01119.13
8.3.20.0000.00820.16
8.3.10.0060.00321.74
8.3.00.0060.00320.77
8.2.180.0160.00316.63
8.2.170.0130.00322.96
8.2.160.0170.00322.09
8.2.150.0050.00324.18
8.2.140.0000.00824.66
8.2.130.0000.00826.16
8.2.120.0030.00718.05
8.2.110.0060.00622.14
8.2.100.0120.00617.91
8.2.90.0040.00417.75
8.2.80.0000.01317.97
8.2.70.0000.00817.80
8.2.60.0000.00818.03
8.2.50.0040.00418.10
8.2.40.0000.00820.55
8.2.30.0090.00019.34
8.2.20.0040.00417.74
8.2.10.0040.00418.18
8.2.00.0080.00017.88
8.1.280.0130.01025.92
8.1.270.0080.00018.88
8.1.260.0030.00626.35
8.1.250.0080.00328.09
8.1.240.0090.00023.93
8.1.230.0090.00319.01
8.1.220.0000.00917.79
8.1.210.0030.00618.77
8.1.200.0070.00317.35
8.1.190.0030.00517.23
8.1.180.0000.00818.10
8.1.170.0090.00018.61
8.1.160.0000.00822.04
8.1.150.0080.00018.91
8.1.140.0040.00417.49
8.1.130.0050.00317.75
8.1.120.0080.00017.41
8.1.110.0000.00817.44
8.1.100.0020.00517.54
8.1.90.0070.00017.36
8.1.80.0040.00417.34
8.1.70.0030.00317.33
8.1.60.0090.00017.58
8.1.50.0050.00517.47
8.1.40.0000.00817.43
8.1.30.0040.00417.51
8.1.20.0080.00017.66
8.1.10.0040.00417.53
8.1.00.0040.00417.46
8.0.300.0000.00919.64
8.0.290.0040.00416.75
8.0.280.0030.00318.46
8.0.270.0040.00417.33
8.0.260.0000.00817.17
8.0.250.0000.00717.00
8.0.240.0000.00716.96
8.0.230.0050.00317.02
8.0.220.0030.00317.02
8.0.210.0040.00416.95
8.0.200.0040.00416.90
8.0.190.0040.00416.95
8.0.180.0030.00517.03
8.0.170.0000.00816.99
8.0.160.0050.00316.95
8.0.150.0000.00716.95
8.0.140.0090.00316.94
8.0.130.0030.00313.43
8.0.120.0000.00916.89
8.0.110.0000.00816.83
8.0.100.0000.00716.99
8.0.90.0040.00416.99
8.0.80.0070.01316.90
8.0.70.0050.00216.77
8.0.60.0050.00316.92
8.0.50.0050.00316.83
8.0.30.0110.01017.10
8.0.20.0120.01017.40
8.0.10.0000.00716.96
8.0.00.0120.01216.70
7.4.330.0070.00015.03
7.4.320.0000.00616.59
7.4.300.0060.00016.65
7.4.290.0040.00416.57
7.4.280.0090.00016.58
7.4.270.0070.00016.41
7.4.260.0000.00716.57
7.4.250.0040.00416.55
7.4.240.0040.00416.57
7.4.230.0040.00416.71
7.4.220.0120.00916.58
7.4.210.0110.00916.45
7.4.200.0050.00316.50
7.4.160.0130.00716.59
7.4.150.0150.00617.40
7.4.140.0150.00617.86
7.4.130.0110.00916.40
7.4.120.0070.01016.70
7.4.110.0090.00916.45
7.4.100.0170.01016.57
7.4.90.0110.00716.49
7.4.80.0070.01419.39
7.4.70.0070.01616.48
7.4.60.0150.00316.55
7.4.50.0060.00016.75
7.4.40.0110.01416.50
7.4.30.0100.01416.62
7.4.00.0130.00315.17
7.3.330.0070.00013.41
7.3.320.0030.00313.35
7.3.310.0070.00016.46
7.3.300.0030.00316.39
7.3.290.0030.00316.44
7.3.280.0070.00916.38
7.3.270.0120.01317.40
7.3.260.0160.00416.41
7.3.250.0080.01316.51
7.3.240.0120.00916.59
7.3.230.0170.00916.43
7.3.210.0130.00916.36
7.3.200.0070.01519.39
7.3.190.0070.01016.59
7.3.180.0070.01316.38
7.3.170.0120.00616.44
7.3.160.0140.01016.45
7.3.10.0060.00716.50
7.3.00.0110.00516.68
7.2.330.0120.00816.52
7.2.320.0130.01316.79
7.2.310.0110.00616.85
7.2.300.0120.00616.46
7.2.290.0090.00916.65
7.2.130.0090.00816.76
7.2.120.0030.00916.88
7.2.110.0060.00816.93
7.2.100.0080.00816.76
7.2.90.0130.00516.99
7.2.80.0080.00916.67
7.2.70.0110.00616.83
7.2.60.0140.00517.01
7.2.50.0070.01016.68
7.2.40.0120.00516.93
7.2.30.0020.01317.06
7.2.20.0080.00516.93
7.2.10.0060.00516.84
7.2.00.0040.01017.64
7.1.250.0050.00715.45
7.1.100.0220.00316.22
7.1.70.0040.00417.13
7.1.60.0160.00919.46
7.1.50.0070.01117.00
7.1.00.0070.07322.30
7.0.200.0070.00314.88
7.0.140.0000.07322.12
7.0.60.0030.09019.93
7.0.50.0000.06017.75
7.0.40.0030.04720.10
7.0.30.0600.04720.23
7.0.20.0330.05320.24
7.0.10.0070.08020.18
7.0.00.0000.07020.10
5.6.280.0070.07021.07
5.6.210.0070.06720.76
5.6.200.0070.07718.22
5.6.190.0070.05720.64
5.6.180.0330.07320.40
5.6.170.0230.07720.45
5.6.160.0070.08320.51
5.6.150.0070.08018.19
5.6.140.0100.08318.28
5.6.130.0070.07718.25
5.6.120.0100.06721.12
5.6.110.0030.10021.02
5.6.100.0030.07021.01
5.6.90.0070.03721.00
5.6.80.0170.07020.28
5.5.350.0270.08020.50
5.5.340.0070.08018.05
5.5.330.0130.05320.48
5.5.320.0030.07320.36
5.5.310.0330.07020.25
5.5.300.0030.08718.07
5.5.290.0000.04317.99
5.5.280.0000.04720.66
5.5.270.0170.07320.86
5.5.260.0130.07720.68
5.5.250.0070.03720.66
5.5.240.0300.06720.02
5.4.450.0470.05319.41
5.4.440.0770.06719.45
5.4.430.0900.05319.47
5.4.420.0830.04719.23
5.4.410.0970.05319.42
5.4.400.0900.05719.15
5.4.390.0700.05318.53
5.4.380.0500.06018.61
5.4.370.0830.05318.77
5.4.360.0770.04718.61
5.4.350.0700.05018.77
5.4.340.0600.05718.78
5.4.320.0530.06318.70
5.4.310.0700.05018.50
5.4.300.0500.06318.50
5.4.290.0870.07018.78
5.4.280.0630.05018.54
5.4.270.0730.06318.74
5.4.260.0770.05718.73
5.4.250.0730.05318.65
5.4.240.0870.05318.79
5.4.230.0830.04018.77
5.4.220.1070.04018.77
5.4.210.0900.03718.47
5.4.200.0900.05016.58
5.4.190.0800.05318.73
5.4.180.0700.04318.73
5.4.170.0700.07318.60
5.4.160.0800.06318.71
5.4.150.0600.06318.54
5.4.140.0700.05016.20
5.4.130.0600.06316.35
5.4.120.0800.06316.29
5.4.110.0770.04316.45
5.4.100.0830.05016.29
5.4.90.0770.05316.46
5.4.80.0630.05316.42
5.4.70.0830.04716.20
5.4.60.0800.05316.28
5.4.50.0870.04316.44
5.4.40.0670.05316.43
5.4.30.0630.05016.22
5.4.20.0600.06016.27
5.4.10.0700.05716.18
5.4.00.0470.06015.76
5.3.290.0800.05314.81
5.3.280.0670.05314.66
5.3.270.0700.08014.73
5.3.260.0670.07714.65
5.3.250.0830.08014.76
5.3.240.0530.06714.78
5.3.230.0670.05714.76
5.3.220.0670.05714.58
5.3.210.0800.05014.58
5.3.200.0800.05014.72
5.3.190.0700.05714.63
5.3.180.0700.06714.79
5.3.170.0430.06714.61
5.3.160.0630.05714.64
5.3.150.0670.08314.62
5.3.140.0830.08314.63
5.3.130.0630.08314.62
5.3.120.0870.07314.59
5.3.110.0900.07714.79
5.3.100.0700.07314.18
5.3.90.0700.07314.08
5.3.80.0870.05714.14
5.3.70.0700.06014.14
5.3.60.0830.05314.14
5.3.50.0970.06013.99
5.3.40.0900.05014.14
5.3.30.0730.05713.91
5.3.20.0570.05313.84
5.3.10.0830.05013.88
5.3.00.0930.08313.71
5.2.170.0770.05011.27
5.2.160.0900.06011.27
5.2.150.1070.04711.28
5.2.140.0900.03711.37
5.2.130.0670.05011.33
5.2.120.0670.03711.23
5.2.110.0670.04011.15
5.2.100.0530.04311.21
5.2.90.0570.04311.36
5.2.80.0670.04311.11
5.2.70.0430.04711.24
5.2.60.0470.04711.19
5.2.50.0700.04011.09
5.2.40.0370.05011.00
5.2.30.0470.04711.12
5.2.20.0470.03710.99
5.2.10.0430.04310.92
5.2.00.0370.04010.71
5.1.60.0500.04010.12
5.1.50.0330.04710.04
5.1.40.1570.03310.20
5.1.30.0300.04010.42
5.1.20.0330.04710.39
5.1.10.0600.04310.13
5.1.00.0500.03310.11
5.0.50.0270.0308.70
5.0.40.0300.0308.52
5.0.30.0200.0508.34
5.0.20.0270.0338.35
5.0.10.0200.0438.33
5.0.00.0400.0408.18
4.4.90.0370.0175.99
4.4.80.0200.0275.94
4.4.70.0230.0235.98
4.4.60.0330.0235.96
4.4.50.0230.0235.93
4.4.40.0270.0376.07
4.4.30.0170.0335.94
4.4.20.0230.0276.11
4.4.10.0270.0206.05
4.4.00.0370.0405.96
4.3.110.0100.0235.94
4.3.100.0330.0205.83
4.3.90.0200.0175.84
4.3.80.0300.0305.88
4.3.70.0200.0235.81
4.3.60.0300.0135.81
4.3.50.0230.0235.93
4.3.40.0270.0335.78
4.3.30.0130.0204.62
4.3.20.0200.0234.58
4.3.10.0200.0274.56
4.3.00.0070.0339.46

preferences:
50.59 ms | 400 KiB | 5 Q