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, $flat); unset($array[$k]); } } 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)
8.3.60.0100.00716.63
8.3.50.0120.01121.95
8.3.40.0090.00618.87
8.3.30.0040.01219.04
8.3.20.0090.00020.34
8.3.10.0040.00421.71
8.3.00.0000.00819.08
8.2.180.0040.01516.88
8.2.170.0150.00022.96
8.2.160.0110.00422.23
8.2.150.0050.00324.18
8.2.140.0000.00824.66
8.2.130.0080.00026.16
8.2.120.0120.00019.46
8.2.110.0030.00720.22
8.2.100.0060.01018.22
8.2.90.0000.00819.15
8.2.80.0050.00317.97
8.2.70.0050.00317.75
8.2.60.0000.00818.04
8.2.50.0000.00818.07
8.2.40.0030.00618.31
8.2.30.0040.00419.50
8.2.20.0000.00817.82
8.2.10.0040.00418.13
8.2.00.0040.00417.82
8.1.280.0040.01425.92
8.1.270.0060.00318.99
8.1.260.0040.00726.35
8.1.250.0000.01128.09
8.1.240.0050.00523.81
8.1.230.0110.00019.01
8.1.220.0040.00417.74
8.1.210.0050.00318.77
8.1.200.0100.00017.24
8.1.190.0040.00417.23
8.1.180.0040.00418.10
8.1.170.0030.00618.49
8.1.160.0000.00722.07
8.1.150.0040.00418.78
8.1.140.0030.00619.25
8.1.130.0000.00717.82
8.1.120.0050.00317.48
8.1.110.0080.00017.40
8.1.100.0040.00317.48
8.1.90.0040.00417.45
8.1.80.0040.00417.35
8.1.70.0000.00817.45
8.1.60.0040.00417.56
8.1.50.0000.01117.43
8.1.40.0000.00817.41
8.1.30.0050.00317.66
8.1.20.0040.00417.57
8.1.10.0090.00017.46
8.1.00.0030.00617.49
8.0.300.0040.00418.77
8.0.290.0050.00216.75
8.0.280.0000.00718.52
8.0.270.0030.00317.27
8.0.260.0060.00017.27
8.0.250.0040.00417.07
8.0.240.0040.00416.93
8.0.230.0000.00717.02
8.0.220.0040.00416.97
8.0.210.0070.00017.03
8.0.200.0030.00317.04
8.0.190.0040.00417.05
8.0.180.0050.00217.00
8.0.170.0080.00017.02
8.0.160.0040.00416.96
8.0.150.0040.00416.98
8.0.140.0070.00016.96
8.0.130.0000.00613.35
8.0.120.0080.00016.93
8.0.110.0080.00017.00
8.0.100.0080.00016.85
8.0.90.0000.00816.81
8.0.80.0120.01217.01
8.0.70.0000.00716.86
8.0.60.0030.00516.92
8.0.50.0080.00016.95
8.0.30.0130.01317.07
8.0.20.0160.00817.40
8.0.10.0000.00716.96
8.0.00.0120.00916.70
7.4.330.0030.00315.09
7.4.320.0000.00716.37
7.4.300.0060.00016.50
7.4.290.0100.00016.64
7.4.280.0030.00516.52
7.4.270.0030.00316.57
7.4.260.0040.00416.52
7.4.250.0000.00816.56
7.4.240.0020.00516.56
7.4.230.0000.00716.64
7.4.220.0190.00716.61
7.4.210.0060.01216.63
7.4.200.0040.00416.48
7.4.160.0180.00716.25
7.4.150.0130.00817.40
7.4.140.0160.00717.86
7.4.130.0090.01116.75
7.4.120.0090.01016.44
7.4.110.0120.00816.62
7.4.100.0180.01016.40
7.4.90.0120.00816.56
7.4.80.0070.01519.39
7.4.70.0190.00316.44
7.4.60.0060.01216.57
7.4.50.0040.00416.57
7.4.40.0110.00716.59
7.4.30.0040.01716.46
7.4.00.0070.01014.97
7.3.330.0000.00613.42
7.3.320.0030.00313.44
7.3.310.0070.00316.25
7.3.300.0000.00616.45
7.3.290.0000.00716.31
7.3.280.0090.00916.41
7.3.270.0230.00617.40
7.3.260.0120.00616.36
7.3.250.0080.01116.51
7.3.240.0150.00416.34
7.3.230.0130.00816.39
7.3.210.0110.00716.38
7.3.200.0060.01119.39
7.3.190.0070.01016.29
7.3.180.0120.00616.54
7.3.170.0180.00416.48
7.3.160.0130.00316.39
7.3.120.0070.01014.88
7.3.110.0120.00314.81
7.3.100.0100.00314.80
7.3.90.0070.01114.85
7.3.80.0040.00714.86
7.3.70.0090.00014.78
7.3.60.0060.00914.94
7.3.50.0080.00315.03
7.3.40.0100.00314.55
7.3.30.0110.00414.71
7.3.20.0080.00416.88
7.3.10.0040.01216.85
7.3.00.0070.00716.72
7.2.330.0140.00616.44
7.2.320.0090.01016.49
7.2.310.0090.00916.80
7.2.300.0050.02016.76
7.2.290.0090.01216.70
7.2.250.0070.01415.06
7.2.240.0090.00915.25
7.2.230.0090.00915.01
7.2.220.0070.01015.23
7.2.210.0100.00314.95
7.2.200.0080.00514.95
7.2.190.0100.00715.13
7.2.180.0030.01014.99
7.2.170.0080.00814.79
7.2.60.0090.00617.08
7.2.00.0070.00719.42
7.1.330.0080.00815.82
7.1.320.0080.00415.55
7.1.310.0060.00615.90
7.1.300.0040.01115.56
7.1.290.0070.00715.66
7.1.280.0040.01115.79
7.1.270.0030.01315.85
7.1.260.0000.01715.90
7.1.200.0030.00915.65
7.1.100.0120.00618.20
7.1.70.0030.00617.29
7.1.60.0150.01119.46
7.1.50.0040.00716.93
7.1.00.0000.09722.40
7.0.200.0100.01015.04
7.0.140.0070.04722.01
7.0.60.0030.04019.89
7.0.50.0100.07717.72
7.0.40.0130.08019.96
7.0.30.0200.08720.30
7.0.20.0300.07020.30
7.0.10.0100.08320.23
7.0.00.0100.08320.12
5.6.280.0070.07020.86
5.6.210.0100.08320.47
5.6.200.0170.07718.20
5.6.190.0030.06020.77
5.6.180.0200.06020.60
5.6.170.0170.05720.48
5.6.160.0030.09320.37
5.6.150.0100.05018.14
5.6.140.0070.07718.28
5.6.130.0170.07318.21
5.6.120.0130.08020.99
5.6.110.0200.07021.03
5.6.100.0070.07720.89
5.6.90.0030.05020.98
5.6.80.0070.07020.29
5.5.350.0370.06720.53
5.5.340.0000.08017.98
5.5.330.0170.07020.29
5.5.320.0030.06320.27
5.5.310.0300.08020.37
5.5.300.0170.04717.98
5.5.290.0130.04718.07
5.5.280.0030.05320.98
5.5.270.0130.08020.75
5.5.260.0130.08020.77
5.5.250.0130.07020.63
5.5.240.0100.06720.29
5.4.450.0500.07719.48
5.4.440.0900.06019.70
5.4.430.0100.05319.58
5.4.420.1030.05019.58
5.4.410.1130.06019.23
5.4.400.1170.05319.31
5.4.390.0170.05718.78
5.4.380.0170.05718.58
5.4.370.0170.06018.76
5.4.360.0270.04318.79
5.4.350.0030.07718.79
5.4.340.0300.04318.74
5.4.320.0170.05318.58
5.4.310.0130.06318.63
5.4.300.0230.06018.61
5.4.290.0200.05018.74
5.4.280.0270.04318.78
5.4.270.0270.04318.75
5.4.260.0230.04718.53
5.4.250.0200.05018.49
5.4.240.0170.05718.74
5.4.230.0130.05718.73
5.4.220.0270.04718.82
5.4.210.0300.04718.71
5.4.200.0200.04716.54
5.4.190.0230.04318.48
5.4.180.0130.06018.77
5.4.170.0130.06318.77
5.4.160.0230.04718.46
5.4.150.0130.05718.71
5.4.140.0170.05316.33
5.4.130.0130.05316.43
5.4.120.0130.05016.31
5.4.110.0230.04316.43
5.4.100.0100.05716.31
5.4.90.0100.05716.29
5.4.80.0300.04016.34
5.4.70.0170.05316.44
5.4.60.0170.05316.29
5.4.50.0100.05316.19
5.4.40.0130.05716.29
5.4.30.0100.05716.31
5.4.20.0200.05016.25
5.4.10.0100.05716.43
5.4.00.0200.04715.66
5.3.290.0170.06014.89
5.3.280.0230.04714.64
5.3.270.0200.05314.83
5.3.260.0200.05014.73
5.3.250.0400.05014.66
5.3.240.0330.06014.65
5.3.230.0130.05314.66
5.3.220.0300.06014.61
5.3.210.0100.06014.75
5.3.200.0230.04314.60
5.3.190.0170.06014.75
5.3.180.0230.07014.61
5.3.170.0030.06314.80
5.3.160.0230.04314.60
5.3.150.0170.05014.61
5.3.140.0170.05714.64
5.3.130.0070.06714.55
5.3.120.0230.05314.70
5.3.110.0170.05314.70
5.3.100.0170.05314.10
5.3.90.0270.05713.98
5.3.80.0200.05014.08
5.3.70.0070.06314.02
5.3.60.0270.05014.12
5.3.50.0230.05014.04
5.3.40.0330.04714.01
5.3.30.0100.05713.93
5.3.20.0070.06013.88
5.3.10.0100.05713.73
5.3.00.0100.05713.77
5.2.170.0130.04311.21
5.2.160.0130.04311.26
5.2.150.0170.04011.22
5.2.140.0070.05311.20
5.2.130.0300.03711.23
5.2.120.0100.04711.24
5.2.110.0130.04711.21
5.2.100.0270.03311.23
5.2.90.0100.04711.20
5.2.80.0170.04311.16
5.2.70.0200.04011.32
5.2.60.0130.04311.07
5.2.50.0100.04711.09
5.2.40.0170.04011.09
5.2.30.0070.05011.06
5.2.20.0170.03711.19
5.2.10.0200.03310.90
5.2.00.0070.04710.77
5.1.60.0130.03010.12
5.1.50.0170.02710.12
5.1.40.0130.03710.02
5.1.30.0130.03710.46
5.1.20.0130.03710.48
5.1.10.0170.03310.13
5.1.00.0130.03310.31
5.0.50.0100.0278.71
5.0.40.0000.0378.46
5.0.30.0100.0438.29
5.0.20.0130.0238.26
5.0.10.0030.0338.18
5.0.00.0100.0438.23
4.4.90.0070.0235.95
4.4.80.0030.0235.93
4.4.70.0030.0235.99
4.4.60.0070.0205.93
4.4.50.0000.0305.97
4.4.40.0070.0336.02
4.4.30.0070.0235.95
4.4.20.0030.0275.99
4.4.10.0070.0205.98
4.4.00.0030.0375.95
4.3.110.0030.0235.84
4.3.100.0070.0205.83
4.3.90.0030.0235.83
4.3.80.0070.0335.81
4.3.70.0030.0235.84
4.3.60.0030.0235.82
4.3.50.0030.0275.95
4.3.40.0100.0405.81
4.3.30.0000.0274.63
4.3.20.0000.0274.58
4.3.10.0130.0204.56
4.3.00.0100.0209.46

preferences:
45.81 ms | 401 KiB | 5 Q