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(!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)
8.3.60.0140.00716.74
8.3.50.0200.00222.11
8.3.40.0060.00918.87
8.3.30.0090.00619.09
8.3.20.0040.00420.20
8.3.10.0060.00321.61
8.3.00.0040.00418.95
8.2.180.0130.01016.88
8.2.170.0090.00922.96
8.2.160.0030.01022.26
8.2.150.0050.00324.18
8.2.140.0000.00824.66
8.2.130.0150.00426.16
8.2.120.0040.00419.66
8.2.110.0050.00521.04
8.2.100.0000.01217.91
8.2.90.0090.00017.97
8.2.80.0040.00417.97
8.2.70.0090.00017.38
8.2.60.0080.00318.05
8.2.50.0040.00418.07
8.2.40.0060.00318.28
8.2.30.0050.00419.50
8.2.20.0030.00617.70
8.2.10.0040.00418.01
8.2.00.0040.00417.79
8.1.280.0110.00725.92
8.1.270.0090.00019.02
8.1.260.0080.00026.35
8.1.250.0100.00028.09
8.1.240.0000.01020.76
8.1.230.0090.00320.90
8.1.220.0060.00317.74
8.1.210.0050.00518.85
8.1.200.0140.00017.35
8.1.190.0050.00317.35
8.1.180.0100.00018.10
8.1.170.0050.00518.64
8.1.160.0070.00022.09
8.1.150.0000.00718.86
8.1.140.0000.00917.34
8.1.130.0070.00017.70
8.1.120.0070.00017.43
8.1.110.0000.00717.44
8.1.100.0000.00717.34
8.1.90.0040.00417.48
8.1.80.0040.00417.32
8.1.70.0000.00717.50
8.1.60.0060.00317.51
8.1.50.0080.00417.50
8.1.40.0000.00917.58
8.1.30.0000.00917.57
8.1.20.0090.00017.63
8.1.10.0040.00417.43
8.1.00.0000.00917.57
8.0.300.0040.00419.94
8.0.290.0040.00416.88
8.0.280.0070.00018.54
8.0.270.0000.00717.20
8.0.260.0030.00317.30
8.0.250.0040.00417.07
8.0.240.0040.00416.94
8.0.230.0000.00717.07
8.0.220.0030.00316.89
8.0.210.0070.00017.01
8.0.200.0030.00316.98
8.0.190.0000.00817.06
8.0.180.0070.00016.98
8.0.170.0000.00816.95
8.0.160.0000.00716.93
8.0.150.0040.00416.80
8.0.140.0060.00316.94
8.0.130.0030.00313.46
8.0.120.0000.00816.98
8.0.110.0040.00416.78
8.0.100.0000.00716.83
8.0.90.0000.00816.80
8.0.80.0190.00016.95
8.0.70.0000.00816.84
8.0.60.0000.00716.96
8.0.50.0000.00816.84
8.0.30.0170.01517.01
8.0.20.0160.00717.40
8.0.10.0040.00416.97
8.0.00.0150.00816.86
7.4.330.0030.00315.03
7.4.320.0030.00316.53
7.4.300.0000.00616.49
7.4.290.0030.00316.40
7.4.280.0070.00016.52
7.4.270.0030.00316.62
7.4.260.0030.00316.59
7.4.250.0000.00816.62
7.4.240.0050.00416.61
7.4.230.0040.00416.49
7.4.220.0030.01616.46
7.4.210.0030.01316.66
7.4.200.0040.00416.63
7.4.160.0170.00316.52
7.4.150.0070.01617.40
7.4.140.0190.00217.86
7.4.130.0080.01216.43
7.4.120.0150.00516.49
7.4.110.0150.00616.41
7.4.100.0220.00616.54
7.4.90.0060.01216.33
7.4.80.0110.00719.39
7.4.70.0070.01516.63
7.4.60.0110.00716.67
7.4.50.0000.00516.39
7.4.40.0060.01816.60
7.4.30.0200.00616.43
7.4.00.0100.00315.05
7.3.330.0030.00313.38
7.3.320.0030.00313.41
7.3.310.0000.00716.49
7.3.300.0070.00016.32
7.3.290.0000.00716.40
7.3.280.0060.00916.42
7.3.270.0100.01017.40
7.3.260.0100.01316.51
7.3.250.0120.00816.43
7.3.240.0060.01216.58
7.3.230.0040.02316.41
7.3.210.0110.00816.59
7.3.200.0140.00819.39
7.3.190.0070.01016.48
7.3.180.0190.00016.64
7.3.170.0120.00616.65
7.3.160.0120.00616.54
7.2.330.0060.01516.73
7.2.320.0030.01516.80
7.2.310.0150.00316.55
7.2.300.0180.00316.46
7.2.290.0060.01316.54
7.2.00.0080.00819.55
7.1.100.0130.01316.43
7.1.70.0060.00916.93
7.1.60.0120.00919.46
7.1.50.0030.01717.09
7.1.00.0000.08022.45
7.0.200.0030.00915.02
7.0.140.0000.06022.09
7.0.110.0630.07720.00
7.0.100.0570.08020.02
7.0.90.0170.04019.85
7.0.80.0200.03019.96
7.0.70.0130.03319.95
7.0.60.0030.04019.98
7.0.50.0100.04020.00
7.0.40.0030.03319.75
7.0.30.0000.05319.82
7.0.20.0070.04719.75
7.0.10.0000.04019.73
7.0.00.0030.05019.78
5.6.280.0000.08020.82
5.6.260.0130.07020.69
5.6.250.0170.06020.69
5.6.240.0170.03020.68
5.6.230.0030.03320.69
5.6.220.0070.03320.47
5.6.210.0070.03720.71
5.6.200.0070.03720.86
5.6.190.0000.04320.69
5.6.180.0130.06020.56
5.6.170.0070.05720.58
5.6.160.0030.04020.63
5.6.150.0030.04720.65
5.6.140.0030.04020.82
5.6.130.0030.04720.70
5.6.120.0000.04320.55
5.6.110.0100.03720.63
5.6.100.0030.05320.68
5.6.90.0030.03720.54
5.6.80.0070.03720.00
5.6.70.0030.04020.00
5.6.60.0030.03719.96
5.6.50.0000.03719.96
5.6.40.0070.03720.02
5.6.30.0070.03720.07
5.6.20.0030.04720.02
5.6.10.0030.06719.96
5.6.00.0170.07719.92
5.5.380.0000.04317.68
5.5.370.0030.03717.55
5.5.360.0030.04017.58
5.5.350.0000.03717.61
5.5.340.0030.04017.91
5.5.330.0070.06718.07
5.5.320.0000.04018.14
5.5.310.0070.06017.83
5.5.300.0070.03718.09
5.5.290.0070.06318.12
5.5.280.0030.04018.06
5.5.270.0070.03317.84
5.5.260.0100.03317.82
5.5.250.0070.04018.04
5.5.240.0030.04017.53
5.5.230.0000.04317.64
5.5.220.0000.04017.46
5.5.210.0030.03717.61
5.5.200.0170.02017.45
5.5.190.0030.04017.60
5.5.180.0000.03717.45
5.5.160.0070.07317.61
5.5.150.0130.06717.26
5.5.140.0100.06717.30
5.5.130.0070.06717.26
5.5.120.0100.07017.45
5.5.110.0000.04317.50
5.5.100.0030.04717.30
5.5.90.0030.06317.20
5.5.80.0030.08317.29
5.5.70.0200.06317.47
5.5.60.0070.07317.15
5.5.50.0000.05717.37
5.5.40.0000.04717.29
5.5.30.0130.04017.40
5.5.20.0030.08017.15
5.5.10.0070.07017.49
5.5.00.0030.06317.48
5.4.450.0000.04019.42
5.4.440.0070.03719.33
5.4.430.0030.03319.32
5.4.420.0030.06019.55
5.4.410.0070.03719.20
5.4.400.0030.03719.09
5.4.390.0130.02719.18
5.4.380.0070.03319.18
5.4.370.0100.03019.17
5.4.360.0070.03719.31
5.4.350.0070.03319.14
5.4.340.0030.06319.35
5.4.320.0030.07319.18
5.4.310.0030.03319.18
5.4.300.0030.04319.16
5.4.290.0030.07019.31
5.4.280.0070.06718.96
5.4.270.0100.05019.24
5.4.260.0070.08019.09
5.4.250.0130.07318.98
5.4.240.0030.06319.02
5.4.230.0030.07319.07
5.4.220.0100.03719.00
5.4.210.0070.04019.17
5.4.200.0070.08018.94
5.4.190.0130.07319.08
5.4.180.0000.07019.17
5.4.170.0030.07319.22
5.4.160.0000.08018.98
5.4.150.0070.08019.01
5.4.140.0030.07716.54
5.4.130.0170.06316.52
5.4.120.0100.07316.56
5.4.110.0130.06716.57
5.4.100.0030.07316.55
5.4.90.0130.05716.57
5.4.80.0070.06716.43
5.4.70.0100.07016.36
5.4.60.0070.07016.63
5.4.50.0130.07016.47
5.4.40.0030.08016.68
5.4.30.0170.07016.38
5.4.20.0000.07716.52
5.4.10.0000.04016.52
5.4.00.0000.07715.97
5.3.290.0030.07014.54
5.3.280.0100.04714.64
5.3.270.0030.07714.71
5.3.260.0030.05714.71
5.3.250.0070.07314.75
5.3.240.0170.06714.85
5.3.230.0070.07314.61
5.3.220.0000.06314.67
5.3.210.0000.06714.81
5.3.200.0070.04014.62
5.3.190.0100.04314.60
5.3.180.0030.07714.72
5.3.170.0100.05014.81
5.3.160.0070.04314.80
5.3.150.0070.07014.57
5.3.140.0070.07014.71
5.3.130.0000.05014.56
5.3.120.0130.07314.70
5.3.110.0070.07014.52
5.3.100.0070.07314.18
5.3.90.0100.03314.12
5.3.80.0030.07014.26
5.3.70.0030.04714.05
5.3.60.0170.05014.04
5.3.50.0130.06314.03
5.3.40.0070.07313.98
5.3.30.0200.05713.95
5.3.20.0100.02713.79
5.3.10.0100.07013.66
5.3.00.0030.07313.79
5.2.170.0030.07012.67
5.2.160.0030.05712.67
5.2.150.0000.05712.67
5.2.140.0030.05012.67
5.2.130.0030.06312.67
5.2.120.0030.06012.67
5.2.110.0030.05312.67
5.2.100.0030.03012.67
5.2.90.0030.06012.67
5.2.80.0030.06712.67
5.2.70.0000.03712.67
5.2.60.0000.06312.67
5.2.50.0170.05312.67
5.2.40.0000.03312.67
5.2.30.0130.05012.67
5.2.20.0130.04712.67
5.2.10.0100.05312.67
5.2.00.0100.05312.67
5.1.60.0030.05012.67
5.1.50.0030.04712.67
5.1.40.0070.05012.67
5.1.30.0000.06012.67
5.1.20.0100.05312.67
5.1.10.0030.03012.67
5.1.00.0000.04712.67
5.0.50.0070.04312.67
5.0.40.0030.02312.67
5.0.30.0030.05712.67
5.0.20.0000.04312.67
5.0.10.0030.04712.67
5.0.00.0030.06312.67
4.4.90.0070.03012.67
4.4.80.0030.02012.67
4.4.70.0000.02312.67
4.4.60.0030.03312.67
4.4.50.0000.04012.67
4.4.40.0070.03312.67
4.4.30.0000.02012.67
4.4.20.0030.03712.67
4.4.10.0100.03012.67
4.4.00.0030.05012.67
4.3.110.0000.03712.67
4.3.100.0000.02712.67
4.3.90.0070.03312.67
4.3.80.0070.05012.67
4.3.70.0030.03712.67
4.3.60.0000.03012.67
4.3.50.0030.02312.67
4.3.40.0030.05012.67
4.3.30.0000.03312.67
4.3.20.0000.02012.67
4.3.10.0000.02712.67
4.3.00.0030.02312.67

preferences:
38.33 ms | 401 KiB | 5 Q