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); while(count($new_arr)<$size){ $group_order[] = mt_rand(1,4); while(count($group_order)<4){ $x=mt_rand(1,4); if(in_array($x,$group_order) == false){ $group_order[] = $x; } } foreach ($group_order as $value){ if ($value == 1){ $idx = mt_rand(0,(count($a)-1)); $new_arr[] = $a[$idx]; unset($a[$idx]); }elseif ($value == 2){ $idx = mt_rand(0,(count($b)-1)); $new_arr[] = $b[$idx]; unset($b[$idx]); }elseif ($value == 3){ $idx = mt_rand(0,(count($c)-1)); $new_arr[] = $c[$idx]; unset($c[$idx]); }elseif ($value == 4){ $idx = mt_rand(0,(count($d)-1)); $new_arr[] = $d[$idx]; unset($d[$idx]); } } } 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)
7.2.00.0060.00619.18
7.1.70.0080.00316.92
7.1.60.0060.01819.17
7.1.50.0170.01134.71
7.1.00.0000.04722.46
7.0.200.0000.01016.68
7.0.140.0070.07322.12
7.0.100.0170.08319.96
7.0.90.0070.08719.96
7.0.80.0130.03319.91
7.0.70.0100.07319.88
7.0.60.0170.05020.05
7.0.50.0030.06020.26
7.0.40.0070.06019.95
7.0.30.0130.06720.16
7.0.20.0170.07319.95
7.0.10.0070.06320.03
7.0.00.0130.08020.18
5.6.280.0030.07321.08
5.6.250.0130.06020.64
5.6.240.0100.07320.52
5.6.230.0000.07020.51
5.6.220.0030.09020.50
5.6.210.0030.06320.58
5.6.200.0070.08021.13
5.6.190.0100.04321.18
5.6.180.0130.07321.18
5.6.170.0100.07721.03
5.6.160.0070.07320.95
5.6.150.0100.08021.10
5.6.140.0200.07020.96
5.6.130.0100.07721.08
5.6.120.0100.07020.92
5.6.110.0130.07321.04
5.6.100.0070.04720.95
5.6.90.0170.05320.95
5.6.80.0100.04320.50
5.6.70.0070.04020.43
5.6.60.0070.08020.41
5.6.50.0100.07720.53
5.6.40.0070.07320.47
5.6.30.0130.05020.43
5.6.20.0030.06020.42
5.6.10.0030.08020.38
5.6.00.0100.08020.38
5.5.380.0070.07020.37
5.5.370.0070.04720.43
5.5.360.0070.06020.57
5.5.350.0070.05020.46
5.5.340.0030.05720.89
5.5.330.0070.05020.79
5.5.320.0100.04020.90
5.5.310.0000.07320.84
5.5.300.0100.08020.89
5.5.290.0230.06720.91
5.5.280.0130.06020.80
5.5.270.0130.08020.84
5.5.260.0130.07320.93
5.5.250.0130.07320.74
5.5.240.0030.05720.31
5.5.230.0070.08320.21
5.5.220.0030.09020.27
5.5.210.0030.05020.18
5.5.200.0070.07020.14
5.5.190.0070.07020.23
5.5.180.0070.08020.25
5.5.160.0130.04320.00
5.5.150.0100.07320.25
5.5.140.0070.07020.09
5.5.130.0030.04320.21
5.5.120.0000.04720.16
5.5.110.0130.03720.25
5.5.100.0030.04720.09
5.5.90.0070.04020.05
5.5.80.0100.04019.96
5.5.70.0070.03020.15
5.5.60.0070.03720.06
5.5.50.0130.02720.07
5.5.40.0000.04320.09
5.5.30.0000.04320.11
5.5.20.0070.04720.12
5.5.10.0030.07719.99
5.5.00.0070.05319.98
5.4.450.0070.08319.35
5.4.440.0030.07719.46
5.4.430.0100.07719.19
5.4.420.0100.07719.44
5.4.410.0070.04319.24
5.4.400.0030.04318.95
5.4.390.0130.07318.91
5.4.380.0070.05719.02
5.4.370.0130.07018.90
5.4.360.0000.05019.14
5.4.350.0100.07319.03
5.4.340.0200.06719.12
5.4.320.0230.05719.21
5.4.310.0030.08018.92
5.4.300.0130.03019.04
5.4.290.0030.04019.23
5.4.280.0070.04018.90
5.4.270.0030.04018.94
5.4.260.0070.03319.07
5.4.250.0030.03719.04
5.4.240.0100.03319.20
5.4.230.0070.03319.17
5.4.220.0030.04019.20
5.4.210.0070.03318.84
5.4.200.0170.02719.03
5.4.190.0030.05318.84
5.4.180.0030.04719.20
5.4.170.0000.04318.93
5.4.160.0030.04318.82
5.4.150.0030.04019.20
5.4.140.0030.03716.46
5.4.130.0000.03716.45
5.4.120.0070.03316.48
5.4.110.0030.03716.55
5.4.100.0030.03716.34
5.4.90.0070.03716.36
5.4.80.0070.03316.38
5.4.70.0000.03716.32
5.4.60.0100.03016.49
5.4.50.0030.03716.44
5.4.40.0070.03316.53
5.4.30.0030.03716.43
5.4.20.0030.04016.32
5.4.10.0000.04016.44
5.4.00.0000.04015.93
5.3.290.0000.08714.75
5.3.280.0030.03314.63
5.3.270.0030.04314.62
5.3.260.0070.03714.68
5.3.250.0070.04314.64
5.3.240.0030.03314.76
5.3.230.0100.03314.62
5.3.220.0070.03314.60
5.3.210.0000.04014.55
5.3.200.0070.03714.55
5.3.190.0030.03014.51
5.3.180.0030.03714.70
5.3.170.0030.03714.61
5.3.160.0000.04014.56
5.3.150.0030.03714.65
5.3.140.0070.03314.60
5.3.130.0070.03714.57
5.3.120.0000.03314.66
5.3.110.0030.04014.49
5.3.100.0000.03314.18
5.3.90.0030.03714.09
5.3.80.0070.03314.01
5.3.70.0030.03713.96
5.3.60.0000.03314.16
5.3.50.0070.07714.03
5.3.40.0070.07714.02
5.3.30.0030.07313.99
5.3.20.0030.07313.69
5.3.10.0170.06013.66
5.3.00.0170.05713.58
5.2.170.0130.05713.46
5.2.160.0000.06313.46
5.2.150.0070.05713.46
5.2.140.0000.06713.46
5.2.130.0100.05713.46
5.2.120.0070.06013.46
5.2.110.0000.07313.46
5.2.100.0030.05713.46
5.2.90.0130.04013.46
5.2.80.0070.04713.46
5.2.70.0030.03713.46
5.2.60.0030.06313.46
5.2.50.0070.04313.46
5.2.40.0070.05713.46
5.2.30.0030.05013.46
5.2.20.0030.03013.46
5.2.10.0000.04313.46
5.2.00.0000.03713.46
5.1.60.0030.04013.46
5.1.50.0030.04713.46
5.1.40.0070.04713.46
5.1.30.0000.06013.46
5.1.20.0000.05713.46
5.1.10.0070.04013.46
5.1.00.0130.05013.46
5.0.50.0000.04713.46
5.0.40.0070.04013.46
5.0.30.0030.06713.46
5.0.20.0030.03013.46
5.0.10.0100.04313.46
5.0.00.0030.03013.46
4.4.90.0070.03313.46
4.4.80.0000.03013.46
4.4.70.0030.02713.46
4.4.60.0000.02313.46
4.4.50.0070.02713.46
4.4.40.0030.02713.46
4.4.30.0030.03713.46
4.4.20.0000.03713.46
4.4.10.0070.03013.46
4.4.00.0070.04713.46
4.3.110.0030.03313.46
4.3.100.0070.01713.46
4.3.90.0000.03713.46
4.3.80.0030.04313.46
4.3.70.0070.03013.46
4.3.60.0070.02013.46
4.3.50.0030.03013.46
4.3.40.0000.02313.46
4.3.30.0070.03013.46
4.3.20.0030.02713.46
4.3.10.0000.03013.46
4.3.00.0000.03713.46

preferences:
41.84 ms | 401 KiB | 5 Q