3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = pack('N', time()); $b = pack('N', substr(time(), 2, 8)); $c = random_bytes(2); $d = random_bytes(2); echo bin2hex($a . $b . $c . $d).PHP_EOL; echo time();

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)
7.4.00.0040.01415.10
7.3.120.0070.01314.39
7.3.110.0000.01315.05
7.3.100.0060.00914.85
7.3.90.0030.01014.68
7.3.80.0030.01015.04
7.3.70.0070.00714.78
7.3.60.0030.01214.86
7.3.50.0090.00614.79
7.3.40.0000.01314.64
7.3.30.0040.01114.68
7.3.20.0060.00916.72
7.3.10.0000.01516.46
7.3.00.0150.00016.59
7.2.250.0130.00715.21
7.2.240.0150.00414.86
7.2.230.0100.00714.69
7.2.220.0060.01214.93
7.2.210.0030.01414.85
7.2.200.0040.01114.70
7.2.190.0100.00314.88
7.2.180.0070.00714.73
7.2.170.0130.00315.07
7.2.60.0070.00716.91
7.2.00.0060.00619.33
7.1.330.0030.01315.51
7.1.320.0070.00715.86
7.1.310.0040.01115.67
7.1.300.0030.01415.93
7.1.290.0030.01115.79
7.1.280.0000.01215.91
7.1.270.0000.01115.78
7.1.260.0030.01115.77
7.1.200.0060.00615.80
7.1.100.0030.00618.23
7.1.70.0070.00017.16
7.1.60.0040.01419.48
7.1.50.0140.01116.80
7.1.00.0030.07722.33
7.0.200.0120.00614.54
7.0.80.0700.07020.03
7.0.70.0570.08019.88
7.0.60.0630.07019.83
7.0.50.0600.07320.35
7.0.40.0100.07720.17
7.0.30.0070.04720.14
7.0.20.0070.07020.04
7.0.10.0030.06020.13
7.0.00.0030.04320.08
5.6.280.0000.03720.78
5.6.230.0130.07720.66
5.6.220.0100.07020.61
5.6.210.0070.08720.74
5.6.200.0130.08021.05
5.6.190.0070.08320.93
5.6.180.0030.07720.96
5.6.170.0130.08021.10
5.6.160.0130.03721.08
5.6.150.0070.06021.03
5.6.140.0070.03721.09
5.6.130.0100.03720.95
5.6.120.0070.05321.16
5.6.110.0030.08021.02
5.6.100.0100.04020.91
5.6.90.0070.04021.01
5.6.80.0000.04320.55
5.6.70.0000.05020.42
5.6.60.0030.04020.47
5.6.50.0070.03720.40
5.6.40.0000.04320.38
5.6.30.0030.04020.40
5.6.20.0070.03020.39
5.6.10.0070.08020.38
5.6.00.0000.04320.34
5.5.370.0030.08320.54
5.5.360.0100.08020.34
5.5.350.0070.08020.33
5.5.340.0170.07020.75
5.5.330.0130.07720.87
5.5.320.0100.07320.91
5.5.310.0070.06720.88
5.5.300.0100.04320.84
5.5.290.0070.04020.80
5.5.280.0000.04720.82
5.5.270.0030.04720.88
5.5.260.0030.04020.76
5.5.250.0030.04020.70
5.5.240.0000.04020.00
5.5.230.0100.03320.27
5.5.220.0070.03020.18
5.5.210.0100.02720.26
5.5.200.0030.04020.26
5.5.190.0000.04320.18
5.5.180.0030.04020.21
5.5.160.0070.06019.99
5.5.150.0030.04020.07
5.5.140.0000.06320.12
5.5.130.0170.06320.18
5.5.120.0070.06020.23
5.5.110.0100.02720.07
5.5.100.0200.05720.08
5.5.90.0030.05020.06
5.5.80.0100.04320.14
5.5.70.0100.03320.04
5.5.60.0030.04020.11
5.5.50.0030.04020.16
5.5.40.0030.04020.07
5.5.30.0070.03719.95
5.5.20.0100.07720.10
5.5.10.0030.04020.00
5.5.00.0000.07320.03

preferences:
38.79 ms | 401 KiB | 5 Q