3v4l.org

run code in 300+ PHP versions simultaneously
<?php mt_srand(42); for ($i = 0; $i < 20; $i++) { $key = generate_key(61); $len = strlen($key); echo "{$key} {$len}\n"; } function generate_key($n) { $key = base64_urlencode(rand_buffer(ceil($n*0.75))); 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)
7.3.10.0120.00616.40
7.3.00.0080.01016.72
7.2.130.0080.01016.83
7.2.120.0060.01116.88
7.2.110.0090.00716.94
7.2.100.0090.00816.87
7.2.90.0100.01016.60
7.2.80.0170.00816.73
7.2.70.0110.00816.68
7.2.60.0120.01016.86
7.2.50.0100.00716.96
7.2.40.0080.01016.89
7.2.30.0030.01016.74
7.2.20.0050.00816.97
7.2.10.0060.00616.76
7.2.00.0090.00417.80
7.1.250.0080.00515.66
7.1.240.0110.00015.88
7.1.230.0030.00915.75
7.1.220.0090.00315.64
7.1.210.0060.00615.40
7.1.200.0040.00715.64
7.1.190.0000.01115.44
7.1.180.0040.00415.84
7.1.170.0030.00715.70
7.1.160.0030.00715.59
7.1.150.0060.01015.87
7.1.140.0000.01015.84
7.1.130.0000.01115.90
7.1.120.0070.00315.86
7.1.110.0070.01015.71
7.1.100.0030.01415.75
7.1.90.0030.00715.75
7.1.80.0030.01015.81
7.1.70.0040.00616.61
7.1.60.0060.01217.66
7.1.50.0050.01316.45
7.1.40.0050.00615.96
7.1.30.0030.00915.59
7.1.20.0030.00715.87
7.1.10.0110.00415.67
7.1.00.0080.04019.18
7.0.330.0000.01015.12
7.0.320.0000.00915.47
7.0.310.0060.00615.21
7.0.300.0050.00515.42
7.0.290.0080.00315.40
7.0.280.0060.00615.35
7.0.270.0040.00715.39
7.0.260.0000.01115.32
7.0.250.0000.01015.27
7.0.240.0030.01415.63
7.0.230.0070.00715.18
7.0.220.0000.01415.28
7.0.210.0040.00715.43
7.0.200.0090.00816.11
7.0.190.0080.00415.36
7.0.180.0040.00715.02
7.0.170.0070.00315.46
7.0.160.0030.01015.38
7.0.150.0040.00715.45
7.0.140.0000.04318.75
7.0.130.0000.01215.05
7.0.120.0070.00715.61
7.0.110.0060.00615.25
7.0.100.0060.00615.45
7.0.90.0040.00715.34
7.0.80.0030.00915.35
7.0.70.0080.00415.20
7.0.60.0060.04717.64
7.0.50.0060.02616.69
7.0.40.0040.02716.76
7.0.30.0220.04516.81
7.0.20.0100.04816.74
7.0.10.0070.04016.82
7.0.00.0040.04716.79
5.6.380.0070.00414.55
5.6.370.0120.00314.32
5.6.360.0030.01014.40
5.6.350.0100.00714.24
5.6.340.0070.00314.34
5.6.330.0060.00314.18
5.6.320.0120.00414.15
5.6.310.0000.01114.77
5.6.300.0060.00614.50
5.6.290.0060.00614.48
5.6.280.0110.03517.71
5.6.270.0040.00714.45
5.6.260.0030.00714.43
5.6.250.0030.01014.34
5.6.240.0000.01314.28
5.6.230.0070.00714.52
5.6.220.0100.00614.50
5.6.210.0100.02017.40
5.6.200.0050.02316.17
5.6.190.0070.02317.32
5.6.180.1920.02817.49
5.6.170.0160.04117.43
5.6.160.0110.03517.44
5.6.150.0030.02616.32
5.6.140.0020.04616.25
5.6.130.0030.02516.47
5.6.120.0080.04517.69
5.6.110.0110.03317.58
5.6.100.0070.04617.72
5.6.90.0050.02517.68
5.6.80.0080.03917.37
5.6.70.0000.01514.18
5.6.60.0070.01114.26
5.6.50.0060.00614.06
5.6.40.0030.00614.10
5.6.30.0060.01014.17
5.6.20.0060.00614.41
5.6.10.0080.00814.07
5.6.00.0090.00614.25
5.5.380.0060.00311.60
5.5.370.0000.01311.60
5.5.360.0000.00911.60
5.5.350.0120.04316.01
5.5.340.0030.02314.77
5.5.330.0070.04115.95
5.5.320.0270.03316.04
5.5.310.0180.03715.99
5.5.300.0020.02414.79
5.5.290.0030.03614.82
5.5.280.0090.04216.30
5.5.270.0050.04216.19
5.5.260.0070.04616.22
5.5.250.0100.04016.11
5.5.240.2070.01815.96
5.5.230.0040.00411.60
5.5.220.0050.00311.60
5.5.210.0050.00511.60
5.5.200.0000.00911.60
5.5.190.0070.00711.60
5.5.180.0080.00011.60
5.5.170.0060.00611.60
5.5.160.0030.01011.60
5.5.150.0040.00711.60
5.5.140.0040.00711.60
5.5.130.0040.00811.60
5.5.120.0040.00711.60
5.5.110.0100.00011.60
5.5.100.0000.00811.60
5.5.90.0070.00711.60
5.5.80.0000.01111.60
5.5.70.0000.01011.60
5.5.60.0090.00311.60
5.5.50.0060.00911.60
5.5.40.0000.01111.60
5.5.30.0000.00811.60
5.5.20.0030.00611.60
5.5.10.0030.00511.60
5.5.00.0000.00711.60
5.4.450.0210.02221.23
5.4.440.0280.02920.76
5.4.430.0120.02720.76
5.4.420.0120.02520.76
5.4.410.0270.02620.76
5.4.400.0250.02220.76
5.4.390.0280.02020.35
5.4.380.0080.03015.15
5.4.370.0050.03515.15
5.4.360.0100.02715.19
5.4.350.0070.03215.07
5.4.340.0110.02715.20
5.4.330.0060.00311.60
5.4.320.0050.02112.06
5.4.310.0040.02212.05
5.4.300.0040.02412.05
5.4.290.0060.02312.05
5.4.280.0080.02312.00
5.4.270.0070.01912.00
5.4.260.0040.02412.00
5.4.250.0070.02312.00
5.4.240.0080.02612.00
5.4.230.0040.03112.00
5.4.220.0120.02612.00
5.4.210.0050.03012.00
5.4.200.0040.02312.00
5.4.190.0060.02212.00
5.4.180.0050.02612.00
5.4.170.0050.02312.00
5.4.160.0040.02212.00
5.4.150.0080.02312.00
5.4.140.0080.02911.84
5.4.130.0080.02011.83
5.4.120.0080.02011.81
5.4.110.0020.02411.81
5.4.100.0060.02011.81
5.4.90.0040.02211.81
5.4.80.0090.02211.81
5.4.70.0080.02011.81
5.4.60.0080.01911.81
5.4.50.0080.01911.81
5.4.40.0070.01911.80
5.4.30.0060.02211.80
5.4.20.0020.02411.80
5.4.10.0110.01811.80
5.4.00.0060.02411.54
5.3.290.0030.02312.20
5.3.280.0090.02412.15
5.3.270.0070.02512.16
5.3.260.0040.03512.16
5.3.250.0060.03112.16
5.3.240.0070.03712.16
5.3.230.0070.03312.15
5.3.220.0080.03412.14
5.3.210.0070.03012.14
5.3.200.0080.03012.14
5.3.190.0090.02812.14
5.3.180.0060.03012.14
5.3.170.0040.03212.14
5.3.160.0100.02712.14
5.3.150.0060.02912.14
5.3.140.0080.02812.13
5.3.130.0070.03212.13
5.3.120.0050.03412.13
5.3.110.0060.03212.13
5.3.100.0070.03011.86
5.3.90.0060.02911.86
5.3.80.0070.02611.85
5.3.70.0040.02911.85
5.3.60.0070.03111.84
5.3.50.0050.02711.82
5.3.40.0080.02111.82
5.3.30.0050.02111.80
5.3.20.0060.02211.69
5.3.10.0060.01911.67
5.3.00.0080.02111.66
5.2.170.0040.01910.42
5.2.160.0040.01910.42
5.2.150.0030.02010.42
5.2.140.0030.01810.41
5.2.130.0040.01810.40
5.2.120.0060.01710.40
5.2.110.0060.01710.40
5.2.100.0030.02010.40
5.2.90.0080.01410.40
5.2.80.0030.02010.39
5.2.70.0050.01810.39
5.2.60.0070.01610.37
5.2.50.0050.02010.35
5.2.40.0040.01910.34
5.2.30.0050.01810.33
5.2.20.0040.01810.32
5.2.10.0030.01810.28
5.2.00.0030.01810.21
5.1.60.0030.0169.85
5.1.50.0050.0159.85
5.1.40.0040.0139.84
5.1.30.0050.01310.02
5.1.20.0050.01810.03
5.1.10.0080.0199.88
5.1.00.0040.0179.88
5.0.50.0020.0139.13
5.0.40.0040.0139.06
5.0.30.0040.0208.96
5.0.20.0040.0128.96
5.0.10.0020.0168.95
5.0.00.0020.0208.94
4.4.90.0020.0128.19
4.4.80.0030.0098.18
4.4.70.0040.0118.18
4.4.60.0020.0118.18
4.4.50.0020.0128.19
4.4.40.0020.0158.16
4.4.30.0040.0118.18
4.4.20.0020.0118.22
4.4.10.0030.0108.22
4.4.00.0020.0168.18
4.3.110.0050.0098.13
4.3.100.0020.0128.13
4.3.90.0020.0128.12
4.3.80.0040.0168.09
4.3.70.0020.0098.12
4.3.60.0020.0118.11
4.3.50.0040.0108.11
4.3.40.0030.0158.07
4.3.30.0030.0107.47
4.3.20.0050.0107.46
4.3.10.0010.0107.44
4.3.00.0030.01219.95

preferences:
44.91 ms | 401 KiB | 5 Q