3v4l.org

run code in 300+ PHP versions simultaneously
<?php $old_arr=array(1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20); $size = count($old_arr); print_r($size); for($i=0;$i<=19;$i++){ if ($i<=4){ $a[] = $old_arr[$i]; }elseif ($i>4 && $i<=9){ $b[] = $old_arr[$i]; }elseif ($i>9 && $i<=14){ $c[] = $old_arr[$i]; }elseif ($i>14){ $d[] = $old_arr[$i]; } } print_r($a); print_r($b); print_r($c); print_r($d); $new_arr = array(); $group_order[] = array(); while(count($new_arr)<$size){ foreach ($group_order as $i => $value) { unset($group_order[$i]); } $group_order = array_values($group_order); $group_order[] = mt_rand(1,4); while(count($group_order)<4){ $x=mt_rand(1,4); if(in_array($x,$group_order) == false){ $group_order[] = $x; } } print_r($group_order); foreach ($group_order as $value){ if ($value == 1){ $idx = mt_rand(0,(count($a)-1)); $new_arr[] = $a[$idx]; unset($a[$idx]); $a = array_values($a); }elseif ($value == 2){ $idx = mt_rand(0,(count($b)-1)); $new_arr[] = $b[$idx]; unset($b[$idx]); $b = array_values($b); }elseif ($value == 3){ $idx = mt_rand(0,(count($c)-1)); $new_arr[] = $c[$idx]; unset($c[$idx]); $c = array_values($c); }elseif ($value == 4){ $idx = mt_rand(0,(count($d)-1)); $new_arr[] = $d[$idx]; unset($d[$idx]); $d = array_values($d); } } } print_r($new_arr); ?>

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)
7.4.10.0060.01315.12
7.4.00.0070.01015.23
7.3.130.0000.01414.85
7.3.120.0090.00914.61
7.3.110.0100.01015.00
7.3.100.0030.01014.93
7.3.90.0030.01014.82
7.3.80.0030.01014.96
7.3.70.0040.01115.02
7.3.60.0060.01215.02
7.3.50.0030.00915.00
7.3.40.0080.00414.68
7.3.30.0040.00714.87
7.3.20.0000.00916.68
7.3.10.0050.00816.49
7.3.00.0030.01116.69
7.2.260.0100.00714.76
7.2.250.0030.01215.17
7.2.240.0060.00915.04
7.2.230.0040.01215.23
7.2.220.0140.00315.11
7.2.210.0060.00915.00
7.2.200.0060.00914.96
7.2.190.0070.01015.19
7.2.180.0070.00714.84
7.2.170.0030.00914.88
7.2.160.0030.00915.16
7.2.150.0000.01616.80
7.2.140.0040.01216.86
7.2.130.0020.01217.05
7.2.120.0090.00516.91
7.2.110.0060.00817.04
7.2.100.0040.00916.85
7.2.90.0080.00816.99
7.2.80.0090.00517.14
7.2.70.0040.01316.81
7.2.60.0070.00816.91
7.2.50.0060.00816.87
7.2.40.0090.00816.87
7.2.30.0080.00816.81
7.2.20.0060.00616.88
7.2.10.0050.00716.81
7.2.00.0030.01217.66
7.1.330.0070.00715.67
7.1.320.0110.00716.04
7.1.310.0040.00815.75
7.1.300.0000.01215.86
7.1.290.0080.00415.83
7.1.280.0060.00615.82
7.1.270.0000.00915.72
7.1.260.0140.00315.77
7.1.250.0080.00515.52
7.1.240.0070.00715.97
7.1.230.0000.00915.79
7.1.220.0000.01415.75
7.1.210.0070.00715.75
7.1.200.0060.00615.90
7.1.190.0070.00315.80
7.1.180.0060.00915.59
7.1.170.0030.00915.68
7.1.160.0090.00015.91
7.1.150.0060.01015.77
7.1.140.0070.00715.58
7.1.130.0030.01215.77
7.1.120.0090.00915.66
7.1.110.0050.00515.71
7.1.100.0070.00415.99
7.1.90.0100.00315.71
7.1.80.0100.00715.57
7.1.70.0020.01116.50
7.1.60.0100.01117.63
7.1.50.0050.01516.46
7.1.40.0030.01016.01
7.1.30.0070.00715.83
7.1.20.0040.01115.93
7.1.10.0140.00015.68
7.1.00.0050.03518.95
7.0.330.0060.00315.10
7.0.320.0090.00315.34
7.0.310.0040.00715.43
7.0.300.0090.00615.40
7.0.290.0030.01015.44
7.0.280.0110.00315.48
7.0.270.0040.01115.21
7.0.260.0090.00615.25
7.0.250.0030.01015.46
7.0.240.0030.00815.32
7.0.230.0090.00915.17
7.0.220.0040.01115.43
7.0.210.0040.00715.17
7.0.200.0060.00616.15
7.0.190.0040.01115.57
7.0.180.0060.00915.44
7.0.170.0110.00415.59
7.0.160.0100.00715.57
7.0.150.0030.01415.50
7.0.140.0070.03818.60
7.0.130.0030.00715.20
7.0.120.0100.00315.50
7.0.110.0030.01215.55
7.0.100.0060.00915.29
7.0.90.0040.01515.32
7.0.80.0070.00715.18
7.0.70.0060.00915.18
7.0.60.0030.03717.79
7.0.50.0050.04616.61
7.0.40.0070.02516.97
7.0.30.0250.04017.04
7.0.20.0150.04217.07
7.0.10.0080.02317.12
7.0.00.0050.04017.08
5.6.400.0060.00914.64
5.6.390.0130.00314.39
5.6.380.0070.00714.55
5.6.370.0040.01114.64
5.6.360.0040.01114.24
5.6.350.0030.01014.16
5.6.340.0040.01114.75
5.6.330.0070.00714.46
5.6.320.0060.00614.64
5.6.310.0070.01014.52
5.6.300.0030.01014.07
5.6.290.0000.01714.64
5.6.280.0050.03917.80
5.6.270.0000.01014.66
5.6.260.0040.00814.33
5.6.250.0130.00314.78
5.6.240.0060.00614.38
5.6.230.0070.00314.52
5.6.220.0100.00714.54
5.6.210.0070.04317.44
5.6.200.0040.02516.24
5.6.190.0100.02617.31
5.6.180.0200.02617.37
5.6.170.0150.02317.38
5.6.160.0070.02617.39
5.6.150.0050.02516.43
5.6.140.0050.04216.20
5.6.130.0050.02516.27
5.6.120.0060.02317.81
5.6.110.0050.04717.73
5.6.100.0070.03817.67
5.6.90.0130.03817.72
5.6.80.0100.03917.51
5.6.70.0130.00314.52
5.6.60.0040.01414.07
5.6.50.0000.01814.54
5.6.40.0070.01114.25
5.6.30.0040.01114.40
5.6.20.0000.01514.55
5.6.10.0030.01214.17
5.6.00.0070.00414.21
5.5.380.0030.00714.63
5.5.370.0040.01214.64
5.5.360.0080.01214.61
5.5.350.1920.02217.53
5.5.340.0100.03316.32
5.5.330.0070.04317.31
5.5.320.0030.04317.49
5.5.310.0130.02717.37
5.5.300.0070.03816.31
5.5.290.0080.02616.19
5.5.280.0070.04617.55
5.5.270.0070.04517.42
5.5.260.0030.04817.59
5.5.250.0070.04217.59
5.5.240.0050.04517.18
5.5.230.0000.01614.41
5.5.220.0070.00314.43
5.5.210.0060.00914.49
5.5.200.0030.01014.32
5.5.190.0090.00314.25
5.5.180.0070.01314.38
5.5.170.0110.00614.51
5.5.160.0030.00714.21
5.5.150.0070.00714.25
5.5.140.0030.01414.17
5.5.130.0060.00914.38
5.5.120.0000.01714.40
5.5.110.0040.01414.52
5.5.100.0090.00614.59
5.5.90.0150.00014.26
5.5.80.0100.00714.16
5.5.70.0130.00014.35
5.5.60.0060.00614.06
5.5.50.0120.00414.09
5.5.40.0030.01514.40
5.5.30.0040.01114.51
5.5.20.0090.00314.45
5.5.10.0120.00314.59
5.5.00.0040.01114.50
5.4.450.1920.02016.62
5.4.440.1570.02716.72
5.4.430.1970.02316.73
5.4.420.1820.02016.61
5.4.410.2100.02316.62
5.4.400.1540.02016.46
5.4.390.1910.02116.45
5.4.380.1900.02216.58
5.4.370.1700.02416.54
5.4.360.1820.02416.55
5.4.350.1900.01716.43
5.4.340.2200.02516.46
5.4.330.0030.00613.92
5.4.320.1870.02016.46
5.4.310.1840.01516.55
5.4.300.1860.02416.52
5.4.290.1850.01916.54
5.4.280.1770.02416.50
5.4.270.1570.02416.53
5.4.260.1850.02316.45
5.4.250.1820.02216.57
5.4.240.1920.02016.56
5.4.230.1970.02516.56
5.4.220.1660.02516.45
5.4.210.2020.02116.61
5.4.200.1870.02216.57
5.4.190.1780.02316.55
5.4.180.1830.02316.55
5.4.170.1760.02116.38
5.4.160.2050.02316.44
5.4.150.1790.01816.49
5.4.140.2120.02015.13
5.4.130.1870.02015.21
5.4.120.1880.01815.10
5.4.110.1870.02115.24
5.4.100.1860.02115.25
5.4.90.1670.02015.17
5.4.80.1780.02515.29
5.4.70.0960.01715.22
5.4.60.0060.02315.09
5.4.50.1800.02115.22
5.4.40.1750.02415.24
5.4.30.1820.01815.21
5.4.20.1830.02015.15
5.4.10.1730.02015.13
5.4.00.1740.02414.88
5.3.290.1870.02114.30
5.3.280.1920.02014.22
5.3.270.1960.02114.23
5.3.260.2220.02414.26
5.3.250.1860.02214.31
5.3.240.1980.02014.33
5.3.230.1730.02114.38
5.3.220.1770.01814.29
5.3.210.1910.02014.24
5.3.200.1950.02014.33
5.3.190.2150.02214.21
5.3.180.1810.02214.21
5.3.170.1780.02014.23
5.3.160.0040.02714.29
5.3.150.0060.01914.20
5.3.140.1800.02414.24
5.3.130.1730.02214.25
5.3.120.1750.02114.27
5.3.110.1810.02114.19
5.3.100.1780.02114.00
5.3.90.1750.02313.96
5.3.80.1770.02213.94
5.3.70.1630.02913.94
5.3.60.1820.01713.96
5.3.50.1800.01713.95
5.3.40.1750.02513.87
5.3.30.0120.02013.97
5.3.20.0030.02013.77
5.3.10.1730.02013.88
5.3.00.1860.02013.79
5.2.170.3170.02711.22
5.2.160.3100.02711.25
5.2.150.3130.02711.18
5.2.140.0030.02711.32
5.2.130.0000.03011.10
5.2.120.3130.02711.21
5.2.110.2930.02311.14
5.2.100.2900.02711.04
5.2.90.3330.02711.05
5.2.80.2730.02711.02
5.2.70.2830.03011.20
5.2.60.3030.02711.00
5.2.50.3230.03011.09
5.2.40.2430.02711.03
5.2.30.2730.02710.96
5.2.20.3130.02710.92
5.2.10.3170.02310.85
5.2.00.3070.03010.66
5.1.60.3030.0279.89
5.1.50.2700.03010.14
5.1.40.3130.0209.89
5.1.30.2830.02310.29
5.1.20.2570.02310.54
5.1.10.2470.03310.21
5.1.00.2470.02710.00
5.0.50.1630.0278.64
5.0.40.1100.0238.38
5.0.30.1230.0308.42
5.0.20.1200.0208.15
5.0.10.1230.0178.09
5.0.00.1230.0308.28
4.4.90.1630.0177.14
4.4.80.1530.0107.16
4.4.70.1730.0177.24
4.4.60.1500.0107.25
4.4.50.1700.0177.25
4.4.40.1470.0237.25
4.4.30.1670.0207.25
4.4.20.1370.0107.25
4.4.10.1630.0137.26
4.4.00.1230.0277.26
4.3.110.1230.0137.26
4.3.100.1170.0107.26
4.3.90.1130.0137.26
4.3.80.1430.0277.26
4.3.70.1400.0177.26
4.3.60.1300.0207.26
4.3.50.1430.0177.26
4.3.40.1500.0277.26
4.3.30.0700.0177.26
4.3.20.0770.0237.26
4.3.10.0770.0177.26
4.3.00.0830.0237.26

preferences:
47.99 ms | 401 KiB | 5 Q