3v4l.org

run code in 300+ PHP versions simultaneously
<?php function flatten_array($array, $flat = array()) { foreach($array as $k=>$v){ if(!is_array($v)){ while(true){ $i = isset($i) ? $i+1 : 0; $key = $k.$i; if(!array_key_exists($key, $flat)) 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)
8.3.60.0070.01416.63
8.3.50.0130.00922.18
8.3.40.0090.00618.92
8.3.30.0110.00719.18
8.3.20.0040.00420.16
8.3.10.0030.00521.84
8.3.00.0080.00019.02
8.2.180.0070.00716.88
8.2.170.0090.00622.96
8.2.160.0110.00422.17
8.2.150.0000.00824.18
8.2.140.0090.00024.66
8.2.130.0030.00526.16
8.2.120.0060.00319.91
8.2.110.0030.00720.55
8.2.100.0100.00318.16
8.2.90.0000.00819.36
8.2.80.0000.00917.97
8.2.70.0060.00317.63
8.2.60.0040.00418.05
8.2.50.0040.00418.07
8.2.40.0090.00018.16
8.2.30.0040.00419.56
8.2.20.0000.00817.70
8.2.10.0000.00817.98
8.2.00.0040.00417.82
8.1.280.0120.00625.92
8.1.270.0080.00023.99
8.1.260.0090.00026.35
8.1.250.0050.00328.09
8.1.240.0060.00323.92
8.1.230.0070.00419.00
8.1.220.0040.00417.79
8.1.210.0040.00418.77
8.1.200.0000.00917.35
8.1.190.0000.00817.35
8.1.180.0040.00418.10
8.1.170.0050.00318.59
8.1.160.0030.00522.03
8.1.150.0000.00718.82
8.1.140.0080.00017.37
8.1.130.0000.00717.80
8.1.120.0040.00417.39
8.1.110.0000.00717.37
8.1.100.0050.00317.50
8.1.90.0030.00517.38
8.1.80.0040.00417.45
8.1.70.0000.00717.38
8.1.60.0050.00317.62
8.1.50.0030.00717.56
8.1.40.0060.00317.44
8.1.30.0030.00617.65
8.1.20.0050.00317.67
8.1.10.0050.00317.51
8.1.00.0060.00317.53
8.0.300.0060.00318.77
8.0.290.0000.00816.75
8.0.280.0040.00418.41
8.0.270.0040.00417.33
8.0.260.0060.00017.17
8.0.250.0070.00016.93
8.0.240.0030.00516.94
8.0.230.0030.00316.97
8.0.220.0000.00717.00
8.0.210.0030.00316.86
8.0.200.0070.00017.06
8.0.190.0030.00616.89
8.0.180.0000.00716.88
8.0.170.0040.00416.86
8.0.160.0000.00716.94
8.0.150.0040.00416.91
8.0.140.0040.00716.86
8.0.130.0030.00313.39
8.0.120.0030.00616.91
8.0.110.0050.00316.88
8.0.100.0050.00216.91
8.0.90.0000.00716.80
8.0.80.0090.00916.91
8.0.70.0040.00417.00
8.0.60.0000.00816.87
8.0.50.0050.00317.07
8.0.30.0100.01717.15
8.0.20.0170.00517.40
8.0.10.0040.00417.05
8.0.00.0130.01116.82
7.4.330.0070.00015.03
7.4.320.0000.00616.52
7.4.300.0030.00316.51
7.4.290.0100.00016.63
7.4.280.0040.00416.58
7.4.270.0000.00716.62
7.4.260.0030.00516.54
7.4.250.0000.00816.50
7.4.240.0020.00516.56
7.4.230.0000.00816.49
7.4.220.0090.01216.47
7.4.210.0120.01016.59
7.4.200.0000.00716.50
7.4.160.0120.01216.59
7.4.150.0140.00517.40
7.4.140.0110.01217.86
7.4.130.0090.01016.49
7.4.120.0060.01316.60
7.4.110.0150.00316.70
7.4.100.0140.01416.45
7.4.90.0090.00916.38
7.4.80.0130.00719.39
7.4.70.0060.01916.45
7.4.60.0090.00916.47
7.4.50.0000.00816.50
7.4.40.0140.00316.41
7.4.30.0080.01116.73
7.4.00.0060.01015.16
7.3.330.0000.00513.44
7.3.320.0050.00013.32
7.3.310.0040.00416.44
7.3.300.0030.00316.33
7.3.290.0000.00716.39
7.3.280.0090.01016.42
7.3.270.0180.00417.40
7.3.260.0120.00916.43
7.3.250.0140.00616.40
7.3.240.0090.01116.71
7.3.230.0130.01316.39
7.3.210.0100.01016.47
7.3.200.0190.00019.39
7.3.190.0090.00916.54
7.3.180.0060.01316.43
7.3.170.0100.01016.66
7.3.160.0070.01116.71
7.2.330.0060.01616.80
7.2.320.0050.01416.73
7.2.310.0130.00716.70
7.2.300.0120.00916.37
7.2.290.0060.01216.76
7.2.60.0050.00516.90
7.2.00.0070.00719.42
7.1.200.0100.00315.70
7.1.100.0140.00318.40
7.1.70.0030.01017.03
7.1.60.0170.00719.46
7.1.50.0070.01017.09
7.1.00.0030.07322.37
7.0.200.0110.00715.05
7.0.140.0030.04722.21
7.0.60.0100.08019.91
7.0.50.0100.04317.84
7.0.40.0030.04720.09
7.0.30.0400.04020.09
7.0.20.0370.07320.15
7.0.10.0070.08020.24
7.0.00.0170.07720.22
5.6.280.0030.07721.07
5.6.210.0070.07720.64
5.6.200.0100.08318.19
5.6.190.0030.06020.61
5.6.180.0300.07020.61
5.6.170.0330.07020.57
5.6.160.0130.07720.71
5.6.150.0100.07718.12
5.6.140.0070.05718.21
5.6.130.0130.07018.27
5.6.120.0070.05721.04
5.6.110.0100.08321.03
5.6.100.0100.08320.99
5.6.90.0130.03021.11
5.6.80.0100.06020.38
5.5.350.0270.08020.41
5.5.340.0030.08318.02
5.5.330.0100.05020.27
5.5.320.0330.06020.27
5.5.310.0370.07320.34
5.5.300.0070.04318.05
5.5.290.0030.04318.10
5.5.280.0030.08020.66
5.5.270.0100.04320.87
5.5.260.0070.07020.94
5.5.250.0030.04720.69
5.5.240.0130.06720.27
5.4.450.0600.05719.64
5.4.440.0870.06319.45
5.4.430.0830.07319.33
5.4.420.0770.06319.63
5.4.410.0000.06019.34
5.4.400.0700.06019.27
5.4.390.0170.05718.75
5.4.380.0170.05718.62
5.4.370.0170.05718.73
5.4.360.0230.05018.49
5.4.350.0200.06018.74
5.4.340.0230.05018.50
5.4.320.0130.06018.53
5.4.310.0300.04018.54
5.4.300.0270.04718.78
5.4.290.0230.05018.73
5.4.280.0230.05318.61
5.4.270.0230.05018.46
5.4.260.0130.06018.47
5.4.250.0100.06318.76
5.4.240.0300.04718.74
5.4.230.0170.05718.75
5.4.220.0270.04718.75
5.4.210.0170.06018.75
5.4.200.0230.05016.70
5.4.190.0230.05718.57
5.4.180.0200.06018.74
5.4.170.0270.05718.47
5.4.160.0200.06718.61
5.4.150.0130.06318.81
5.4.140.0230.05016.36
5.4.130.0230.05016.26
5.4.120.0300.04316.30
5.4.110.0200.05016.23
5.4.100.0200.05316.35
5.4.90.0200.05316.31
5.4.80.0230.04716.20
5.4.70.0230.04716.25
5.4.60.0130.05716.23
5.4.50.0170.05016.41
5.4.40.0300.06016.29
5.4.30.0200.05016.30
5.4.20.0170.05316.25
5.4.10.0300.04316.26
5.4.00.0200.05015.84
5.3.290.0130.06014.73
5.3.280.0200.05014.71
5.3.270.0200.05314.61
5.3.260.0100.06014.62
5.3.250.0130.06014.62
5.3.240.0230.05314.83
5.3.230.0230.04714.74
5.3.220.0130.05714.60
5.3.210.0270.04714.76
5.3.200.0170.06014.64
5.3.190.0170.05314.62
5.3.180.0200.05014.80
5.3.170.0130.05314.63
5.3.160.0200.05714.61
5.3.150.0170.05314.69
5.3.140.0330.03714.80
5.3.130.0270.05014.55
5.3.120.0270.04314.79
5.3.110.0270.05714.61
5.3.100.0170.05014.22
5.3.90.0270.05014.24
5.3.80.0230.04314.26
5.3.70.0200.05013.98
5.3.60.0300.04314.14
5.3.50.0100.06014.04
5.3.40.0200.04713.97
5.3.30.0270.04313.97
5.3.20.0200.04713.84
5.3.10.0170.05013.75
5.3.00.0200.04713.73
5.2.170.0200.05711.21
5.2.160.0170.05711.15
5.2.150.0170.06011.29
5.2.140.0130.05311.18
5.2.130.0230.03711.16
5.2.120.0130.06311.25
5.2.110.0170.04011.23
5.2.100.0200.03711.34
5.2.90.0200.04011.13
5.2.80.0100.05711.12
5.2.70.0200.05711.24
5.2.60.0170.06011.18
5.2.50.0170.06311.16
5.2.40.0100.06311.11
5.2.30.0200.04011.09
5.2.20.0230.04311.10
5.2.10.0200.05010.88
5.2.00.0170.04310.86
5.1.60.0030.04310.21
5.1.50.0200.03710.22
5.1.40.0170.03310.22
5.1.30.0100.04010.56
5.1.20.0170.05310.48
5.1.10.0100.04010.23
5.1.00.0130.03710.23
5.0.50.0100.0278.65
5.0.40.0100.0278.50
5.0.30.0070.0478.40
5.0.20.0070.0278.42
5.0.10.0070.0308.24
5.0.00.0130.0378.23
4.4.90.0030.0235.91
4.4.80.0070.0235.91
4.4.70.0100.0205.93
4.4.60.0070.0305.99
4.4.50.0100.0305.94
4.4.40.0070.0375.99
4.4.30.0100.0235.92
4.4.20.0070.0236.01
4.4.10.0070.0235.98
4.4.00.0030.0375.96
4.3.110.0130.0175.84
4.3.100.0100.0175.84
4.3.90.0070.0205.82
4.3.80.0000.0405.95
4.3.70.0100.0175.95
4.3.60.0070.0205.88
4.3.50.0030.0235.89
4.3.40.0070.0375.86
4.3.30.0000.0274.59
4.3.20.0070.0204.55
4.3.10.0070.0204.60
4.3.00.0100.0239.46

preferences:
37.86 ms | 401 KiB | 5 Q