3v4l.org

run code in 300+ PHP versions simultaneously
<?php mt_srand(42); for ($i = 0; $i < 20; $i++) { $key = generate_key(64); $len = strlen($key); echo "{$key} {$len}\n"; } function generate_key($n) { $k = ceil($n*0.75); $key = base64_urlencode(rand_buffer($k)); if (strlen($key) > $n) { $key = substr($key, 0, $n); } return $key; } function base64_urlencode($buf) { return str_replace( array('+', '/', '='), array('-', '_', ''), base64_encode($buf) ); } function rand_buffer($n) { if (function_exists("openssl_random_pseudo_bytes")) { 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)
7.4.00.0040.01414.78
7.3.120.0080.01115.05
7.3.110.0070.01015.02
7.3.100.0040.00814.60
7.3.90.0080.00814.82
7.3.80.0080.00314.61
7.3.70.0060.01214.83
7.3.60.0030.00614.80
7.3.50.0000.01514.95
7.3.40.0070.00714.92
7.3.30.0060.00914.62
7.3.20.0090.01216.50
7.3.10.0090.00316.59
7.3.00.0070.00716.74
7.2.250.0100.00714.66
7.2.240.0100.01015.20
7.2.230.0080.00514.99
7.2.220.0070.00714.90
7.2.210.0040.01114.84
7.2.200.0060.00315.04
7.2.190.0070.01014.95
7.2.180.0000.01214.75
7.2.170.0000.01615.20
7.2.00.0120.00619.30
7.1.330.0040.01115.74
7.1.320.0130.00315.58
7.1.310.0080.00315.94
7.1.300.0060.00615.70
7.1.290.0070.00315.67
7.1.280.0030.01015.52
7.1.270.0140.00615.92
7.1.260.0000.01315.79
7.1.70.0030.00917.50
7.1.60.0040.00717.50
7.1.50.0090.01217.18
7.1.00.0070.07322.52
7.0.200.0070.01016.59
7.0.140.0100.06722.01
7.0.120.0000.07322.04
7.0.110.0030.07321.98
7.0.100.0000.07722.08
7.0.90.0100.07022.07
7.0.80.0130.06022.20
7.0.70.0000.07722.20
7.0.60.0000.07722.14
7.0.50.0070.07022.19
7.0.40.0000.07722.02
7.0.30.0070.07022.07
7.0.20.0000.06322.10
7.0.10.0070.07022.05
7.0.00.0030.07022.06
5.6.280.0030.07321.16
5.6.260.0030.07320.98
5.6.250.0100.06721.06
5.6.240.0070.07721.03
5.6.230.0100.07021.13
5.6.220.0000.07720.86
5.6.210.0030.06720.95
5.6.200.0070.06320.84
5.6.190.0100.06721.07
5.6.180.0100.06021.10
5.6.170.0100.06720.93
5.6.160.0130.06320.96
5.6.150.0070.06721.05
5.6.140.0030.07720.95
5.6.130.0100.06320.83
5.6.120.0070.07320.98
5.6.110.0030.07720.93
5.6.100.0030.07321.09
5.6.90.0030.07320.84
5.6.80.0030.07020.45
5.6.70.0170.05320.23
5.6.60.0000.07020.35
5.6.50.0100.06320.22
5.6.40.0000.07320.23
5.6.30.0030.07320.11
5.6.20.0000.07720.37
5.6.10.0070.06720.11
5.6.00.0000.07320.38
5.5.380.0000.07017.71
5.5.370.0030.07017.56
5.5.360.0030.07317.59
5.5.350.0000.07017.58
5.5.340.0000.06717.93
5.5.330.0000.06718.16
5.5.320.0070.06718.11
5.5.310.0000.06317.79
5.5.300.0030.07018.02
5.5.290.0030.07718.16
5.5.280.0100.07018.11
5.5.270.0070.06718.23
5.5.260.0070.07018.15
5.5.250.0000.07317.64
5.5.240.0000.07017.61
5.5.230.0030.07017.53
5.5.220.0070.06717.30
5.5.210.0030.06717.60
5.5.200.0030.07017.55
5.5.190.0030.07317.28
5.5.180.0000.07717.27
5.5.160.0070.06317.54
5.5.150.0000.07017.68
5.5.140.0070.05717.50
5.5.130.0030.07017.55
5.5.120.0000.06317.42
5.5.110.0000.06717.62
5.5.100.0000.07317.19
5.5.90.0000.07017.45
5.5.80.0030.06717.48
5.5.70.0070.06317.32
5.5.60.0000.07017.44
5.5.50.0030.06717.36
5.5.40.0030.07017.18
5.5.30.0000.07017.21
5.5.20.0000.07317.41
5.5.10.0000.06317.55
5.5.00.0030.07017.46
5.4.450.0000.07719.54
5.4.440.0000.07719.57
5.4.430.0000.07319.55
5.4.420.0070.06719.71
5.4.410.0030.07019.22
5.4.400.0030.06719.04
5.4.390.0000.07319.07
5.4.380.0000.07019.25
5.4.370.0070.06319.07
5.4.360.0000.07319.24
5.4.350.0030.07019.24
5.4.340.0070.06019.03
5.4.320.0000.07319.00
5.4.310.0030.06019.07
5.4.300.0000.07019.05
5.4.290.0100.06018.99
5.4.280.0030.07319.30
5.4.270.0100.06019.08
5.4.260.0000.07019.09
5.4.250.0030.06019.31
5.4.240.0000.06319.07
5.4.230.0030.07018.96
5.4.220.0070.06719.33
5.4.210.0000.06718.99
5.4.200.0000.07019.28
5.4.190.0000.06719.23
5.4.180.0030.06719.23
5.4.170.0070.06318.98
5.4.160.0000.07019.38
5.4.150.0030.07019.04
5.4.140.0030.06716.60
5.4.130.0030.06316.36
5.4.120.0030.06716.55
5.4.110.0000.07016.59
5.4.100.0000.07016.40
5.4.90.0030.05316.54
5.4.80.0030.06016.69
5.4.70.0000.06716.55
5.4.60.0000.06316.53
5.4.50.0000.06716.47
5.4.40.0030.06316.43
5.4.30.0000.06716.59
5.4.20.0000.06716.53
5.4.10.0030.06016.47
5.4.00.0030.06315.98
5.3.290.0070.06714.68
5.3.280.0070.06014.59
5.3.270.0000.06314.70
5.3.260.0030.07014.46
5.3.250.0000.07014.62
5.3.240.0000.05714.70
5.3.230.0100.06014.60
5.3.220.0070.06314.55
5.3.210.0000.07014.66
5.3.200.0000.06714.80
5.3.190.0070.06714.61
5.3.180.0000.07014.58
5.3.170.0030.06314.53
5.3.160.0000.07014.59
5.3.150.0000.07014.43
5.3.140.0070.06014.70
5.3.130.0100.06314.54
5.3.120.0000.07014.70
5.3.110.0000.06714.41
5.3.100.0000.07014.04
5.3.90.0030.06014.12
5.3.80.0000.05714.06
5.3.70.0070.06314.13
5.3.60.0070.06314.23
5.3.50.0000.06714.19
5.3.40.0000.05714.19
5.3.30.0000.06713.93
5.3.20.0030.06313.72
5.3.10.0000.06713.69
5.3.00.0030.05313.60
5.2.170.0030.05311.38
5.2.160.0070.05011.38
5.2.150.0070.05311.11
5.2.140.0000.05711.12
5.2.130.0030.05011.18
5.2.120.0030.05010.96
5.2.110.0030.05011.25
5.2.100.0070.04711.17
5.2.90.0000.05011.08
5.2.80.0000.05311.10
5.2.70.0000.05711.17
5.2.60.0030.04710.92
5.2.50.0000.05711.02
5.2.40.0070.05011.23
5.2.30.0000.06010.95
5.2.20.0000.05711.11
5.2.10.0030.05310.88
5.2.00.0030.05010.72
5.1.60.0030.04310.18
5.1.50.0070.0439.98
5.1.40.0030.0439.99
5.1.30.0070.04010.48
5.1.20.0030.05010.37
5.1.10.0070.04010.04
5.1.00.0100.04010.14
5.0.50.0000.0409.79
5.0.40.0070.0339.79
5.0.30.0000.0609.79
5.0.20.0000.0409.79
5.0.10.0000.0339.79
5.0.00.0030.0579.79
4.4.90.0030.0309.79
4.4.80.0030.0309.79
4.4.70.0000.0339.79
4.4.60.0070.0239.79
4.4.50.0030.0279.79
4.4.40.0000.0509.79
4.4.30.0030.0309.79
4.4.20.0000.0309.79
4.4.10.0000.0309.79
4.4.00.0030.0439.79
4.3.110.0000.0339.79
4.3.100.0030.0309.79
4.3.90.0030.0279.79
4.3.80.0000.0479.79
4.3.70.0000.0279.79
4.3.60.0000.0339.79
4.3.50.0070.0239.79
4.3.40.0000.0409.79
4.3.30.0000.0339.79
4.3.20.0030.0309.79
4.3.10.0000.0339.79
4.3.00.0000.0339.79

preferences:
37.77 ms | 400 KiB | 5 Q