3v4l.org

run code in 300+ PHP versions simultaneously
65<?php define('MAX_LOOPS',5); function withRefValue($elements, $transform) { echo "\n---( Array with $elements element(s): )---\n"; //Build array: for ($i=0; $i<$elements; $i++) { $a[] = "v.$i"; } $counter=0; echo "--> State of array before loop:\n"; var_dump($a); echo "--> Do loop:\n"; foreach ($a as $k=>&$v) { echo " iteration $counter: \$k=$k; \$v=$v\n"; eval($transform); $counter++; if ($counter>MAX_LOOPS) { echo " ** Stuck in a loop! **\n"; break; } } echo "--> State of array after loop:\n"; var_dump($a); } echo "\nPopping elements off end of an unreferenced array, using &\$value."; $transform = 'array_pop($a);'; withRefValue(1, $transform); withRefValue(2, $transform); withRefValue(3, $transform); withRefValue(4, $transform); withRefValue(5, $transform); withRefValue(, $transform);

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)
5.4.320.0230.05019.22
5.4.310.0270.03319.07
5.4.300.0230.05319.19
5.4.290.0230.06019.06
5.4.280.0370.06719.24
5.4.270.0270.05018.87
5.4.260.0270.06319.21
5.4.250.0270.07019.24
5.4.240.0300.07318.84
5.4.230.0370.06019.04
5.4.220.0270.04319.21
5.4.210.0270.04718.84
5.4.200.0300.04019.13
5.4.190.0300.03019.30
5.4.180.0270.05018.98
5.4.170.0400.06319.21
5.4.160.0230.06019.07
5.4.150.0330.07319.22
5.4.140.0230.03716.38
5.4.130.0330.05016.66
5.4.120.0230.03316.34
5.4.110.0300.06316.41
5.4.100.0270.04716.46
5.4.90.0270.03316.52
5.4.80.0300.04016.26
5.4.70.0230.03316.57
5.4.60.0170.04016.43
5.4.50.0270.04016.53
5.4.40.0230.04016.53
5.4.30.0270.06316.48
5.4.20.0200.04316.39
5.4.10.0230.05316.42
5.4.00.0230.05715.80
5.3.290.0330.06314.70
5.3.280.0200.04014.57
5.3.270.0300.06314.58
5.3.260.0230.08014.61
5.3.250.0300.04714.60
5.3.240.0270.07714.69
5.3.230.0370.03714.58
5.3.220.0300.06314.49
5.3.210.0300.05014.48
5.3.200.0270.05714.65
5.3.190.0230.04014.47
5.3.180.0300.07314.57
5.3.170.0270.03714.79
5.3.160.0230.03714.49
5.3.150.0300.06014.65
5.3.140.0230.03714.46
5.3.130.0230.05714.46
5.3.120.0330.06314.53
5.3.110.0330.06314.60
5.3.100.0330.03314.27
5.3.90.0300.03713.92
5.3.80.0400.06013.95
5.3.70.0230.05713.94
5.3.60.0430.05313.98
5.3.50.0270.07013.82
5.3.40.0200.06713.88
5.3.30.0300.06713.99
5.3.20.0300.07313.78
5.3.10.0400.05713.88
5.3.00.0330.06713.86
5.2.170.0370.03312.32
5.2.160.0300.05312.32
5.2.150.0200.06312.32
5.2.140.0330.04312.32
5.2.130.0270.05012.32
5.2.120.0200.03712.32
5.2.110.0270.05312.32
5.2.100.0230.05012.32
5.2.90.0370.04712.32
5.2.80.0200.06012.32
5.2.70.0170.06712.32
5.2.60.0200.05712.32
5.2.50.0270.04012.32
5.2.40.0170.03312.32
5.2.30.0200.05012.32
5.2.20.0300.05012.32
5.2.10.0170.03712.32
5.2.00.0230.05012.32
5.1.60.0130.03712.32
5.1.50.0270.04312.32
5.1.40.0130.05712.32
5.1.30.0200.04712.32
5.1.20.0230.04712.32
5.1.10.0230.05012.32
5.1.00.0230.03312.32
5.0.50.0100.04712.32
5.0.40.0130.02712.32
5.0.30.0070.04012.32
5.0.20.0130.02012.32
5.0.10.0100.03712.32
5.0.00.0100.06312.32
4.4.90.0100.04012.32
4.4.80.0100.02012.32
4.4.70.0130.02712.32
4.4.60.0130.02312.32
4.4.50.0100.02712.32
4.4.40.0070.02712.32
4.4.30.0130.01712.32
4.4.20.0100.03012.32
4.4.10.0170.02712.32
4.4.00.0070.03012.32
4.3.110.0170.03012.32
4.3.100.0130.03012.32
4.3.90.0100.02712.32
4.3.80.0100.03012.32
4.3.70.0070.02012.32
4.3.60.0170.03012.32
4.3.50.0170.01712.32
4.3.40.0070.03012.32
4.3.30.0100.03312.32
4.3.20.0000.02312.32
4.3.10.0030.02312.32
4.3.00.0070.02712.32

preferences:
142.75 ms | 1394 KiB | 7 Q