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; }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)
8.3.60.0040.01216.75
8.3.50.0150.00618.19
8.3.40.0090.00618.79
8.3.30.0140.00019.14
8.3.20.0040.00420.21
8.3.10.0050.00321.90
8.3.00.0090.00019.21
8.2.180.0130.01016.75
8.2.170.0040.01122.96
8.2.160.0000.01422.13
8.2.150.0000.00824.18
8.2.140.0080.00024.66
8.2.130.0030.00526.16
8.2.120.0080.00318.01
8.2.110.0060.00322.11
8.2.100.0120.00318.00
8.2.90.0040.00419.40
8.2.80.0060.00317.97
8.2.70.0060.00317.63
8.2.60.0030.00617.93
8.2.50.0040.00418.07
8.2.40.0000.00818.31
8.2.30.0040.00419.50
8.2.20.0060.00317.82
8.2.10.0000.00817.99
8.2.00.0040.00417.87
8.1.280.0070.01125.92
8.1.270.0040.00418.95
8.1.260.0090.00026.35
8.1.250.0060.00628.09
8.1.240.0030.00721.43
8.1.230.0000.01119.16
8.1.220.0000.00917.74
8.1.210.0060.00318.77
8.1.200.0060.00317.48
8.1.190.0000.00817.35
8.1.180.0040.00418.10
8.1.170.0080.00018.59
8.1.160.0040.00422.09
8.1.150.0030.00518.96
8.1.140.0080.00019.23
8.1.130.0050.00217.76
8.1.120.0040.00417.48
8.1.110.0000.00717.52
8.1.100.0050.00317.49
8.1.90.0050.00217.46
8.1.80.0000.00717.45
8.1.70.0050.00317.45
8.1.60.0040.00417.56
8.1.50.0070.00317.57
8.1.40.0030.00617.50
8.1.30.0080.00017.55
8.1.20.0000.00817.60
8.1.10.0040.00417.55
8.1.00.0080.00017.43
8.0.300.0030.00518.77
8.0.290.0000.00716.75
8.0.280.0070.00018.45
8.0.270.0030.00317.31
8.0.260.0020.00517.25
8.0.250.0070.00017.01
8.0.240.0000.00716.94
8.0.230.0030.00417.00
8.0.220.0040.00416.90
8.0.210.0000.00716.96
8.0.200.0000.00717.03
8.0.190.0000.00717.06
8.0.180.0000.00816.91
8.0.170.0040.00417.00
8.0.160.0000.00716.82
8.0.150.0000.00816.94
8.0.140.0000.00717.01
8.0.130.0000.00613.39
8.0.120.0060.00316.95
8.0.110.0000.00716.98
8.0.100.0040.00416.92
8.0.90.0040.00416.96
8.0.80.0070.01116.99
8.0.70.0040.00416.98
8.0.60.0040.00417.02
8.0.50.0000.00716.79
8.0.30.0130.01217.32
8.0.20.0160.00417.40
8.0.10.0050.00217.09
8.0.00.0110.01316.92
7.4.330.0070.00015.03
7.4.320.0070.00016.53
7.4.300.0060.00016.57
7.4.290.0070.00016.43
7.4.280.0080.00016.40
7.4.270.0050.00316.62
7.4.260.0040.00416.51
7.4.250.0070.00016.58
7.4.240.0020.00616.57
7.4.230.0080.00016.48
7.4.220.0130.01016.55
7.4.210.0050.01316.71
7.4.200.0000.00716.52
7.4.160.0090.00916.61
7.4.150.0120.00617.40
7.4.140.0070.01317.86
7.4.130.0160.00816.56
7.4.120.0110.00916.64
7.4.110.0070.01716.59
7.4.100.0070.01716.47
7.4.90.0160.00416.39
7.4.80.0100.01019.39
7.4.70.0120.00916.51
7.4.60.0040.01416.36
7.4.50.0060.00316.26
7.4.40.0120.00616.61
7.4.30.0080.01316.49
7.4.00.0100.00714.66
7.3.330.0000.00613.45
7.3.320.0060.00013.42
7.3.310.0030.00316.46
7.3.300.0000.00716.30
7.3.290.0000.00716.45
7.3.280.0140.00616.42
7.3.270.0060.01217.40
7.3.260.0070.01016.70
7.3.250.0080.01916.37
7.3.240.0110.00816.44
7.3.230.0120.01316.50
7.3.210.0140.01116.59
7.3.200.0130.00719.39
7.3.190.0110.00716.53
7.3.180.0070.01116.40
7.3.170.0040.01516.56
7.3.160.0140.00316.62
7.2.330.0100.01316.69
7.2.320.0030.01716.73
7.2.310.0090.00916.46
7.2.300.0100.01316.39
7.2.290.0130.00716.70
7.2.00.0070.01019.49
7.1.100.0060.00618.03
7.1.70.0030.01117.25
7.1.60.0100.00017.05
7.1.50.0030.00816.93
7.1.00.0000.07722.27
7.0.200.0100.00616.79
7.0.140.0030.07322.15
7.0.60.0030.08321.63
7.0.50.0100.08017.87
7.0.40.0070.05320.07
7.0.30.0400.04020.06
7.0.20.0330.07720.09
7.0.10.0130.05020.19
7.0.00.0070.07720.15
5.6.280.0100.07021.04
5.6.210.0130.08020.61
5.6.200.0070.04318.19
5.6.190.0070.04320.61
5.6.180.0270.04320.47
5.6.170.0170.06320.55
5.6.160.0030.07020.61
5.6.150.0030.07318.19
5.6.140.0070.03718.19
5.6.130.0100.08018.17
5.6.120.0030.04721.02
5.6.110.0030.08020.97
5.6.100.0030.04021.03
5.6.90.0100.06721.05
5.6.80.0070.06020.43
5.5.350.0300.07320.39
5.5.340.0030.05017.95
5.5.330.0000.05020.41
5.5.320.0000.07720.30
5.5.310.0270.05020.27
5.5.300.0070.04017.92
5.5.290.0030.07318.04
5.5.280.0100.04020.96
5.5.270.0170.07720.92
5.5.260.0100.08720.86
5.5.250.0070.08020.66
5.5.240.0070.07020.16
5.4.450.0630.05019.70
5.4.440.0970.05019.60
5.4.430.1070.04319.46
5.4.420.1030.04719.63
5.4.410.1000.04319.32
5.4.400.1030.05019.31
5.4.390.0130.06318.73
5.4.380.0130.06018.63
5.4.370.0200.05318.84
5.4.360.0230.05018.78
5.4.350.0300.04718.58
5.4.340.0270.05718.74
5.4.320.0070.07018.59
5.4.310.0300.05018.75
5.4.300.0230.07718.49
5.4.290.0130.05718.78
5.4.280.0230.05018.66
5.4.270.0130.08318.66
5.4.260.0130.05718.79
5.4.250.0300.05318.78
5.4.240.0170.06018.57
5.4.230.0300.04318.41
5.4.220.0230.06718.47
5.4.210.0170.05718.59
5.4.200.0100.06016.62
5.4.190.0200.05318.73
5.4.180.0270.05718.69
5.4.170.0170.06018.72
5.4.160.0200.05318.69
5.4.150.0400.04018.71
5.4.140.0200.05316.35
5.4.130.0230.04316.24
5.4.120.0230.04716.35
5.4.110.0270.04016.34
5.4.100.0100.06016.27
5.4.90.0170.05316.23
5.4.80.0070.06316.20
5.4.70.0200.05316.28
5.4.60.0130.06316.25
5.4.50.0030.06016.21
5.4.40.0130.06016.29
5.4.30.0170.05016.25
5.4.20.0230.05016.31
5.4.10.0230.05716.30
5.4.00.0230.06315.77
5.3.290.0200.07714.79
5.3.280.0200.05714.61
5.3.270.0230.05014.75
5.3.260.0230.05314.72
5.3.250.0270.05014.84
5.3.240.0230.05014.66
5.3.230.0130.05714.66
5.3.220.0170.05714.56
5.3.210.0070.07014.63
5.3.200.0130.06014.69
5.3.190.0170.05714.79
5.3.180.0130.06014.58
5.3.170.0170.05014.60
5.3.160.0300.05714.63
5.3.150.0300.04714.59
5.3.140.0200.05714.68
5.3.130.0170.05714.69
5.3.120.0370.06314.73
5.3.110.0200.06714.79
5.3.100.0470.04714.24
5.3.90.0270.06314.07
5.3.80.0170.05314.11
5.3.70.0130.06014.08
5.3.60.0200.06014.01
5.3.50.0100.06014.21
5.3.40.0130.05714.07
5.3.30.0270.04313.96
5.3.20.0270.05713.81
5.3.10.0270.06313.70
5.3.00.0170.05713.71
5.2.170.0030.05311.27
5.2.160.0100.05011.27
5.2.150.0230.03711.16
5.2.140.0170.05711.38
5.2.130.0070.04711.34
5.2.120.0200.05311.18
5.2.110.0100.05011.32
5.2.100.0170.05311.33
5.2.90.0130.06011.16
5.2.80.0170.06011.32
5.2.70.0270.05011.25
5.2.60.0170.04011.04
5.2.50.0130.04311.03
5.2.40.0100.06011.04
5.2.30.0200.04311.05
5.2.20.0370.04310.97
5.2.10.0130.04310.93
5.2.00.0100.04710.84
5.1.60.0200.04310.20
5.1.50.0170.03310.09
5.1.40.0170.03710.07
5.1.30.0130.04310.57
5.1.20.0130.04710.47
5.1.10.0070.04710.27
5.1.00.0300.01710.11
5.0.50.0100.0308.76
5.0.40.0100.0278.44
5.0.30.0100.0578.38
5.0.20.0030.0338.27
5.0.10.0130.0238.27
5.0.00.0130.0378.32
4.4.90.0070.0235.96
4.4.80.0070.0205.94
4.4.70.0070.0235.91
4.4.60.0130.0175.97
4.4.50.0130.0175.94
4.4.40.0030.0406.03
4.4.30.0070.0235.92
4.4.20.0100.0206.10
4.4.10.0070.0236.01
4.4.00.0100.0335.95
4.3.110.0100.0235.88
4.3.100.0030.0235.85
4.3.90.0100.0205.82
4.3.80.0030.0405.90
4.3.70.0000.0305.86
4.3.60.0100.0205.84
4.3.50.0030.0305.84
4.3.40.0030.0405.89
4.3.30.0000.0334.63
4.3.20.0000.0274.56
4.3.10.0070.0304.56
4.3.00.0100.0279.46

preferences:
38.98 ms | 400 KiB | 5 Q