3v4l.org

run code in 300+ PHP versions simultaneously
<?php $max = 1000000; $arr = range(1,$max,3); $arr2 = range(1,$max,2); $arr = array_merge($arr,$arr2); $time = -microtime(true); $res1 = array_unique($arr); $time += microtime(true); echo "deduped to ".count($res1)." in ".$time; // deduped to 666667 in 32.300781965256 $time = -microtime(true); $res2 = array(); foreach($arr as $key=>$val) { $res2[$val] = true; } $res2 = array_keys($res2); $time += microtime(true); echo "<br />deduped to ".count($res2)." in ".$time;// deduped to 666667 in 0.84372591972351 

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)
5.4.310.0100.03912.49
5.4.300.0090.04212.50
5.4.290.0050.04112.50
5.4.280.0050.03912.39
5.4.270.0060.03712.39
5.4.260.0040.04012.39
5.4.250.0080.03612.39
5.4.240.0070.04012.39
5.4.230.0070.04212.38
5.4.220.0080.04112.39
5.4.210.0060.04612.39
5.4.200.0080.03912.38
5.4.190.0080.03812.38
5.4.180.0060.03512.38
5.4.170.0040.03712.39
5.4.160.0070.04112.38
5.4.150.0100.04312.38
5.4.140.0070.03712.07
5.4.130.0040.05012.05
5.4.120.0060.04412.02
5.4.110.0120.03512.02
5.4.100.0070.04412.02
5.4.90.0060.04212.02
5.4.80.0070.04012.02
5.4.70.0080.04212.01
5.4.60.0060.03912.02
5.4.50.0080.03712.02
5.4.40.0080.03812.00
5.4.30.0070.03312.00
5.4.20.0080.03811.99
5.4.10.0070.03811.99
5.4.00.0070.04211.48
5.3.280.0070.03712.71
5.3.270.0100.04312.73
5.3.260.0060.03812.72
5.3.250.0070.04212.72
5.3.240.0110.03912.72
5.3.230.0070.03512.71
5.3.220.0090.03812.68
5.3.210.0070.04612.68
5.3.200.0060.04212.68
5.3.190.0070.03812.68
5.3.180.0090.04012.67
5.3.170.0080.03912.67
5.3.160.0110.04112.68
5.3.150.0070.03912.67
5.3.140.0090.04912.66
5.3.130.0050.04012.66
5.3.120.0050.04312.66
5.3.110.0100.04312.65
5.3.100.0010.04112.12
5.3.90.0070.04812.09
5.3.80.0070.04512.08
5.3.70.0060.03712.07
5.3.60.0110.03612.06
5.3.50.0040.04212.00
5.3.40.0050.03712.00
5.3.30.0060.03511.95
5.3.20.0060.03811.73
5.3.10.0040.03711.70
5.3.00.0040.03911.68
5.2.170.0020.0339.19
5.2.160.0050.0359.18
5.2.150.0030.0339.19
5.2.140.0050.0309.18
5.2.130.0010.0359.14
5.2.120.0020.0309.14
5.2.110.0070.0339.15
5.2.100.0040.0339.14
5.2.90.0050.0309.14
5.2.80.0070.0289.14
5.2.70.0080.0329.14
5.2.60.0050.0429.10
5.2.50.0050.0329.06
5.2.40.0050.0379.04
5.2.30.0040.0319.02
5.2.20.0050.0279.01
5.2.10.0030.0288.93
5.2.00.0050.0318.79
5.1.60.0040.0318.07
5.1.50.0020.0348.07
5.1.40.0030.0298.05
5.1.30.0060.0288.41
5.1.20.0040.0308.43
5.1.10.0050.0278.14
5.1.00.0060.0278.15
5.0.50.0040.0236.63
5.0.40.0060.0216.48
5.0.30.0050.0376.29
5.0.20.0040.0276.27
5.0.10.0040.0296.25
5.0.00.0060.0316.24
4.4.90.0040.0144.78
4.4.80.0030.0154.76
4.4.70.0030.0154.76
4.4.60.0060.0194.75
4.4.50.0040.0154.77
4.4.40.0040.0254.71
4.4.30.0030.0164.76
4.4.20.0020.0184.85
4.4.10.0080.0204.85
4.4.00.0010.0354.76
4.3.110.0050.0194.67
4.3.100.0040.0174.66
4.3.90.0010.0164.63
4.3.80.0040.0254.59
4.3.70.0030.0144.63
4.3.60.0050.0144.63
4.3.50.0060.0124.63
4.3.40.0020.0244.54
4.3.30.0020.0213.29
4.3.20.0030.0263.27
4.3.10.0030.0213.22
4.3.00.0030.01715.17

preferences:
142.29 ms | 1394 KiB | 7 Q