3v4l.org

run code in 300+ PHP versions simultaneously
<?php mt_srand(42); for ($i = 0; $i < 20; $i++) { $key = generate_key(); $len = strlen($key); echo "{$key} {$len}\n"; } function generate_key() { return base64_urlencode(rand_buffer(48)); } function base64_urlencode($buf) { return str_replace(array('+', '/', '='), array('-', '_', ''), base64_encode($buf)); } function rand_buffer($n) { // return openssl_random_pseudo_bytes($n); $buf = ""; for ($i = 0; $i < $n; $i++) { $buf .= chr(mt_rand(0, 255)); } return $buf; }

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)
7.2.00.0060.00919.24
7.1.70.0030.00516.93
7.1.60.0150.00919.70
7.1.50.0080.00316.98
7.1.00.0030.07722.33
7.0.200.0060.00316.79
7.0.140.0100.06322.09
7.0.110.0170.07319.91
7.0.100.0070.08020.07
7.0.90.0130.08019.92
7.0.80.0100.08019.90
7.0.70.0030.09019.90
7.0.60.0130.07320.00
7.0.50.0130.08020.24
7.0.40.0130.07720.00
7.0.30.0070.07719.98
7.0.20.0070.08020.00
7.0.10.0070.07320.09
7.0.00.0100.07720.00
5.6.280.0130.06721.08
5.6.260.0000.09020.46
5.6.250.0170.07720.55
5.6.240.0130.07720.43
5.6.230.0070.07720.52
5.6.220.0030.07720.51
5.6.210.0070.08320.61
5.6.200.0030.05721.10
5.6.190.0030.05321.23
5.6.180.0100.08021.06
5.6.170.0100.08320.89
5.6.160.0200.08020.98
5.6.150.0100.07321.15
5.6.140.0100.05021.14
5.6.130.0100.08021.09
5.6.120.0170.07021.01
5.6.110.0030.06721.23
5.6.100.0130.04321.06
5.6.90.0000.06721.02
5.6.80.0100.07320.42
5.6.70.0070.07720.48
5.6.60.0070.07020.59
5.6.50.0130.07720.30
5.6.40.0030.08320.25
5.6.30.0030.06320.51
5.6.20.0100.04020.34
5.6.10.0170.07720.32
5.6.00.0070.07020.48
5.5.380.0100.06720.43
5.5.370.0130.05020.33
5.5.360.0030.09020.47
5.5.350.0170.07720.34
5.5.340.0200.03320.91
5.5.330.0130.07020.95
5.5.320.0130.06720.91
5.5.310.0100.07720.85
5.5.300.0070.07720.93
5.5.290.0030.08320.93
5.5.280.0100.08020.70
5.5.270.0100.05020.76
5.5.260.0100.08020.85
5.5.250.0100.08020.76
5.5.240.0070.04020.16
5.5.230.0000.08320.15
5.5.220.0100.08320.30
5.5.210.0100.07720.28
5.5.200.0030.07320.05
5.5.190.0100.08720.35
5.5.180.0130.08020.26
5.5.160.0030.08320.21
5.5.150.0030.06320.01
5.5.140.0000.08720.21
5.5.130.0030.08320.20
5.5.120.0130.07020.26
5.5.110.0030.05020.00
5.5.100.0170.07320.12
5.5.90.0130.07019.95
5.5.80.0030.08319.95
5.5.70.0000.08720.03
5.5.60.0070.07020.11
5.5.50.0170.07020.13
5.5.40.0170.07320.05
5.5.30.0100.07019.95
5.5.20.0030.07319.96
5.5.10.0070.08320.18
5.5.00.0000.07720.10
5.4.450.0070.08319.34
5.4.440.0170.06719.33
5.4.430.0100.07719.53
5.4.420.0070.07019.32
5.4.410.0030.06319.36
5.4.400.0000.06318.98
5.4.390.0100.07019.16
5.4.380.0030.08319.14
5.4.370.0030.08019.31
5.4.360.0070.08019.31
5.4.350.0200.06019.25
5.4.340.0130.07719.18
5.4.320.0070.08018.96
5.4.310.0100.03319.34
5.4.300.0030.08018.99
5.4.290.0170.06318.98
5.4.280.0070.04719.22
5.4.270.0100.06318.98
5.4.260.0000.08718.98
5.4.250.0130.06019.08
5.4.240.0030.07719.22
5.4.230.0070.07719.00
5.4.220.0030.07718.98
5.4.210.0070.08319.01
5.4.200.0170.06319.16
5.4.190.0000.05319.14
5.4.180.0100.07318.97
5.4.170.0030.07319.32
5.4.160.0030.08019.32
5.4.150.0070.08018.93
5.4.140.0070.07316.48
5.4.130.0070.04316.29
5.4.120.0030.07716.42
5.4.110.0130.06716.46
5.4.100.0030.07716.70
5.4.90.0070.06316.46
5.4.80.0170.06016.40
5.4.70.0130.07016.61
5.4.60.0100.04016.53
5.4.50.0100.06716.57
5.4.40.0130.07016.53
5.4.30.0000.07316.56
5.4.20.0070.06316.48
5.4.10.0000.06716.38
5.4.00.0030.06715.85
5.3.290.0170.06714.65
5.3.280.0030.07714.56
5.3.270.0100.07314.63
5.3.260.0070.04714.75
5.3.250.0130.07314.76
5.3.240.0030.05314.47
5.3.230.0070.07014.58
5.3.220.0100.07014.58
5.3.210.0000.08314.59
5.3.200.0000.07014.59
5.3.190.0070.08314.58
5.3.180.0030.08014.70
5.3.170.0030.08014.70
5.3.160.0170.06714.65
5.3.150.0000.08714.71
5.3.140.0070.06014.81
5.3.130.0070.08014.64
5.3.120.0030.05714.55
5.3.110.0030.05014.57
5.3.100.0100.06714.07
5.3.90.0130.06714.02
5.3.80.0070.05314.11
5.3.70.0130.06314.06
5.3.60.0130.06314.23
5.3.50.0030.07714.00
5.3.40.0200.06713.84
5.3.30.0030.06014.14
5.3.20.0130.04313.56
5.3.10.0070.04313.80
5.3.00.0100.07013.66
5.2.170.0000.08013.48
5.2.160.0100.05313.48
5.2.150.0100.05013.48
5.2.140.0070.06013.48
5.2.130.0100.04013.48
5.2.120.0030.06013.48
5.2.110.0100.06013.48
5.2.100.0030.05713.48
5.2.90.0100.06013.48
5.2.80.0000.05713.48
5.2.70.0070.06313.48
5.2.60.0070.06013.48
5.2.50.0100.05713.48
5.2.40.0130.05013.48
5.2.30.0030.03713.48
5.2.20.0030.06013.48
5.2.10.0030.06013.48
5.2.00.0030.03713.48
5.1.60.0100.04713.48
5.1.50.0100.03713.48
5.1.40.0030.03313.48
5.1.30.0100.05013.48
5.1.20.0000.06013.48
5.1.10.0030.03013.48
5.1.00.0100.05013.48
5.0.50.0070.04313.48
5.0.40.0030.04313.48
5.0.30.0070.04313.48
5.0.20.0070.04013.48
5.0.10.0030.04313.48
5.0.00.0000.06713.48
4.4.90.0030.03313.48
4.4.80.0030.03713.48
4.4.70.0000.04013.48
4.4.60.0000.03713.48
4.4.50.0000.03713.48
4.4.40.0000.06013.48
4.4.30.0030.03313.48
4.4.20.0000.02713.48
4.4.10.0030.03313.48
4.4.00.0030.04013.48
4.3.110.0030.03313.48
4.3.100.0030.03313.48
4.3.90.0000.03713.48
4.3.80.0030.06713.48
4.3.70.0000.02313.48
4.3.60.0100.02313.48
4.3.50.0030.03313.48
4.3.40.0000.05313.48
4.3.30.0000.04013.48
4.3.20.0000.03713.48
4.3.10.0000.03713.48
4.3.00.0030.03013.48

preferences:
40.56 ms | 401 KiB | 5 Q