3v4l.org

run code in 300+ PHP versions simultaneously
<?php function rot13($str) { for ($i = 0,$l = strlen($str);$i<$l;$i++) { $str[$i] = chr(((ord($str[$i])-84)%26)+97); } return $str; } $d = '';$i=$e=0; $start = microtime(1); while($i++ < 500000) $d = str_rot13('rotate 13'); echo microtime(1) - $start; echo "\n"; $d = ''; $start = microtime(1); while($e++ < 500000) $d = rot13('rotate 13'); echo microtime(1) - $start;

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)
7.4.00.0070.80114.89
7.3.120.0070.55514.83
7.3.110.0070.71214.71
7.3.100.0030.81014.48
7.3.90.0100.72714.93
7.3.80.0070.65914.61
7.3.70.0130.49914.90
7.3.60.0030.78115.00
7.3.50.0100.54614.72
7.3.40.0100.73014.86
7.3.30.0030.56014.90
7.3.20.0030.83616.56
7.3.10.0070.53116.60
7.3.00.0070.52416.56
7.2.250.0030.97115.31
7.2.240.0100.95514.91
7.2.230.0030.97815.21
7.2.220.0030.72015.33
7.2.210.0030.99915.29
7.2.200.0000.92314.82
7.2.190.0070.84914.97
7.2.180.0070.68915.07
7.2.170.0030.68315.24
7.2.00.0070.59719.52
7.1.330.0071.51015.71
7.1.320.0031.49815.98
7.1.310.0031.36915.96
7.1.300.0101.55615.86
7.1.290.0001.49115.95
7.1.280.0071.36715.73
7.1.270.0071.36315.91
7.1.260.0101.25815.97
7.1.70.0100.52017.10
7.1.60.0070.51719.31
7.1.50.0100.50216.87
7.1.00.0030.62322.36
7.0.200.1040.62814.85
7.0.140.0030.69321.95
7.0.120.0000.71022.04
7.0.110.0070.59019.90
7.0.100.0030.60320.02
7.0.90.0130.58320.02
7.0.80.0130.57019.96
7.0.70.0100.62019.86
7.0.60.0030.57020.04
7.0.50.0100.56720.39
7.0.40.0070.61320.20
7.0.30.0030.60020.19
7.0.20.0130.59320.28
7.0.10.0100.74320.04
7.0.00.0100.59020.03
5.6.280.0001.49321.15
5.6.250.0131.20720.68
5.6.240.0071.23320.70
5.6.230.0031.25320.70
5.6.220.0071.19720.55
5.6.210.0101.18720.61
5.6.200.0101.08320.94
5.6.190.0031.20320.98
5.6.180.0171.23020.98
5.6.170.0131.23721.15
5.6.160.0101.17721.06
5.6.150.0031.24021.10
5.6.140.0031.21720.98
5.6.130.0131.21321.22
5.6.120.0031.27021.14
5.6.110.0071.13021.14
5.6.100.0131.24021.11
5.6.90.0031.14021.13
5.6.80.0031.22020.54
5.6.70.0171.23020.29
5.6.60.0071.18720.43
5.6.50.0071.25720.63
5.6.40.0131.30720.45
5.6.30.0001.10320.48
5.6.20.0171.22720.64
5.6.10.0131.25020.57
5.6.00.0131.20020.48
5.5.380.0031.32720.38
5.5.370.0001.33720.58
5.5.360.0131.29020.37
5.5.350.0071.20320.39
5.5.340.0071.34320.78
5.5.330.0071.24721.02
5.5.320.0071.25020.73
5.5.310.0031.30321.04
5.5.300.0171.33020.95
5.5.290.0001.28720.90
5.5.280.0131.14320.85
5.5.270.0101.32720.80
5.5.260.0131.28720.80
5.5.250.0131.17320.65
5.5.240.0101.20320.42
5.5.230.0001.22720.39
5.5.220.0071.16720.24
5.5.210.0131.18020.34
5.5.200.0071.20020.16
5.5.190.0031.16720.22
5.5.180.0071.10320.07
5.5.160.0071.27720.39
5.5.150.0171.16720.30
5.5.140.0031.18020.25
5.5.130.0101.25720.23
5.5.120.0071.26320.05
5.5.110.0031.36720.30
5.5.100.0101.28020.17
5.5.90.0101.25720.25
5.5.80.0001.32320.11
5.5.70.0001.24320.04
5.5.60.0101.25720.18
5.5.50.0101.23720.21
5.5.40.0101.22320.18
5.5.30.0131.24020.13
5.5.20.0131.13720.12
5.5.10.0001.24320.22
5.5.00.0131.14719.94
5.4.450.0131.25019.32
5.4.440.0101.31719.33
5.4.430.0071.28719.32
5.4.420.0171.24019.46
5.4.410.0171.28719.30
5.4.400.0031.25319.01
5.4.390.0171.29019.23
5.4.380.0031.27719.01
5.4.370.0101.23719.05
5.4.360.0071.30319.24
5.4.350.0071.26019.00
5.4.340.0031.25019.09
5.4.320.0031.28019.18
5.4.310.0071.25319.14
5.4.300.0131.24719.00
5.4.290.0001.09719.31
5.4.280.0101.25019.23
5.4.270.0071.31319.31
5.4.260.0071.35019.00
5.4.250.0071.31019.00
5.4.240.0101.17319.01
5.4.230.0101.23719.15
5.4.220.0131.25718.95
5.4.210.0171.29719.00
5.4.200.0071.27019.21
5.4.190.0001.12319.22
5.4.180.0101.27319.17
5.4.170.0071.26719.33
5.4.160.0071.28719.00
5.4.150.0031.26019.17
5.4.140.0031.33316.36
5.4.130.0001.26716.52
5.4.120.0071.28716.43
5.4.110.0171.27016.54
5.4.100.0071.30716.52
5.4.90.0101.25716.62
5.4.80.0101.31716.34
5.4.70.0071.25716.40
5.4.60.0031.25016.63
5.4.50.0001.27316.44
5.4.40.0001.26016.49
5.4.30.0101.30716.38
5.4.20.0031.26716.38
5.4.10.0071.14316.52
5.4.00.0001.26315.73
5.3.290.0031.60014.68
5.3.280.0101.55014.61
5.3.270.0131.62314.59
5.3.260.0071.69714.73
5.3.250.0071.55314.60
5.3.240.0071.86014.63
5.3.230.0031.69714.73
5.3.220.0031.58314.58
5.3.210.0031.62314.60
5.3.200.0031.61714.65
5.3.190.0071.61014.70
5.3.180.0071.60314.70
5.3.170.0101.56714.58
5.3.160.0071.67714.58
5.3.150.0071.59714.59
5.3.140.0001.60014.41
5.3.130.0071.58314.68
5.3.120.0031.56314.68
5.3.110.0101.66314.68
5.3.100.0031.62714.00
5.3.90.0031.59014.04
5.3.80.0071.56714.12
5.3.70.0071.77014.24
5.3.60.0031.58714.01
5.3.50.0001.79013.95
5.3.40.0031.48713.96
5.3.30.0071.43014.00
5.3.20.0131.51713.68
5.3.10.0031.59013.66
5.3.00.0001.74713.63

preferences:
34.68 ms | 400 KiB | 5 Q