3v4l.org

run code in 300+ PHP versions simultaneously
<?php class TokenGenerator { const ALPHABET = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789'; public function generateToken($length = 16) { $alphabetSize = strlen(self::ALPHABET); $token = ''; while (strlen($token) < $length) { $randomBytes = hash_hmac('sha256', openssl_random_pseudo_bytes(20), mcrypt_create_iv(20, \MCRYPT_DEV_URANDOM)); $offset = abs(hexdec(bin2hex(substr($randomBytes, 0, 4)))) % $alphabetSize; $token .= substr(self::ALPHABET, $offset, 1); } return $token; } } $gen = new TokenGenerator(); var_dump($gen->generateToken(10)); var_dump($gen->generateToken(10)); var_dump($gen->generateToken(10)); var_dump($gen->generateToken(20)); var_dump($gen->generateToken(20)); var_dump($gen->generateToken(20));

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)
8.3.60.0110.00718.43
8.3.50.0120.00421.84
8.3.40.0070.01418.76
8.3.30.0100.00720.21
8.3.20.0040.00420.38
8.3.10.0040.00421.92
8.3.00.0040.00422.45
8.2.180.0130.00916.63
8.2.170.0040.01122.96
8.2.160.0110.00722.13
8.2.150.0070.00324.18
8.2.140.0040.00424.66
8.2.130.0040.00426.16
8.2.120.0090.00017.38
8.2.110.0040.00422.20
8.2.100.0080.00317.78
8.2.90.0040.00419.22
8.2.80.0050.00319.26
8.2.70.0030.00517.63
8.2.60.0050.00317.91
8.2.50.0000.00818.07
8.2.40.0060.00318.16
8.2.30.0070.00318.09
8.2.20.0000.00817.76
8.2.10.0000.00717.82
8.2.00.0050.00317.79
8.1.280.0110.00625.92
8.1.270.0030.00524.66
8.1.260.0030.00526.35
8.1.250.0000.00728.09
8.1.240.0030.00723.96
8.1.230.0080.00419.22
8.1.220.0000.00817.74
8.1.210.0040.00418.77
8.1.200.0060.00317.35
8.1.190.0050.00317.41
8.1.180.0030.00618.88
8.1.170.0000.00818.57
8.1.160.0070.00020.91
8.1.150.0040.00418.53
8.1.140.0000.00717.43
8.1.130.0030.00317.81
8.1.120.0000.00717.37
8.1.110.0080.00017.42
8.1.100.0040.00417.37
8.1.90.0030.00417.30
8.1.80.0040.00417.41
8.1.70.0000.00717.44
8.1.60.0060.00317.58
8.1.50.0000.00717.45
8.1.40.0040.00417.55
8.1.30.0060.00317.59
8.1.20.0060.00317.63
8.1.10.0050.00317.59
8.1.00.0030.00617.42
8.0.300.0040.00418.77
8.0.290.0000.00717.16
8.0.280.0040.00418.33
8.0.270.0030.00317.08
8.0.260.0000.00716.84
8.0.250.0040.00416.86
8.0.240.0050.00316.87
8.0.230.0080.00016.94
8.0.220.0000.00716.89
8.0.210.0070.00016.79
8.0.200.0080.00016.86
8.0.190.0020.00516.84
8.0.180.0040.00416.82
8.0.170.0040.00416.88
8.0.160.0030.00316.85
8.0.150.0000.00716.87
8.0.140.0000.00716.75
8.0.130.0060.00013.36
8.0.120.0090.00016.85
8.0.110.0040.00416.93
8.0.100.0040.00416.99
8.0.90.0000.00716.88
8.0.80.0060.01016.92
8.0.70.0050.00216.73
8.0.60.0000.01016.71
8.0.50.0040.00416.87
8.0.30.0100.00917.28
8.0.20.0120.00917.40
8.0.10.0000.00716.88
8.0.00.0110.01016.78
7.4.330.0000.00515.00
7.4.320.0030.00516.34
7.4.300.0000.00716.59
7.4.290.0030.00316.56
7.4.280.0030.00316.64
7.4.270.0040.00416.55
7.4.260.0040.00716.52
7.4.250.0000.00716.49
7.4.240.0050.00216.54
7.4.230.0000.00716.43
7.4.220.0030.02116.48
7.4.210.0080.00916.64
7.4.200.0040.00416.63
7.4.190.0000.00716.76
7.4.160.0110.00416.46
7.4.150.0100.00717.40
7.4.140.0110.01017.86
7.4.130.0100.00916.66
7.4.120.0030.01416.70
7.4.110.0030.01616.38
7.4.100.0080.00916.85
7.4.90.0090.00916.44
7.4.80.0050.01219.39
7.4.70.0070.01016.45
7.4.60.0040.01516.56
7.4.50.0090.00016.41
7.4.40.0140.00322.77
7.4.30.0140.00616.74
7.4.10.0080.01215.18
7.4.00.0140.00414.96
7.3.330.0050.00013.42
7.3.320.0050.00013.21
7.3.310.0070.00016.52
7.3.300.0070.00016.37
7.3.290.0030.01216.42
7.3.280.0100.00716.45
7.3.270.0070.01017.40
7.3.260.0140.00316.57
7.3.250.0070.01116.39
7.3.240.0140.00716.36
7.3.230.0070.01116.64
7.3.210.0080.00816.37
7.3.200.0110.01119.39
7.3.190.0100.00716.54
7.3.180.0110.00616.46
7.3.170.0080.00816.32
7.3.160.0060.00916.44
7.3.130.0070.00414.80
7.3.120.0030.01314.91
7.3.110.0110.00714.86
7.3.100.0040.01414.98
7.3.90.0060.01215.09
7.3.80.0110.00014.78
7.3.70.0030.01214.97
7.3.60.0080.00414.68
7.3.50.0150.00014.90
7.3.40.0030.01414.83
7.3.30.0040.01214.92
7.3.20.0000.01416.93
7.3.10.0030.01316.57
7.3.00.0040.01116.59
7.2.330.0120.00616.38
7.2.320.0100.01316.61
7.2.310.0130.01016.33
7.2.300.0040.01316.49
7.2.290.0190.00316.64
7.2.260.0110.00715.19
7.2.250.0030.01615.26
7.2.240.0000.01814.95
7.2.230.0100.01015.14
7.2.220.0110.00715.06
7.2.210.0060.00314.85
7.2.200.0060.00914.99
7.2.190.0000.01814.70
7.2.180.0090.00515.07
7.2.170.0000.01315.01
7.2.160.0070.01015.09
7.2.150.0090.00316.99
7.2.140.0040.00716.84
7.2.130.0040.01117.07
7.2.120.0090.00316.82
7.2.110.0070.00716.97
7.2.100.0080.00616.73
7.2.90.0040.00816.96
7.2.80.0100.00716.84
7.2.70.0060.01216.72
7.2.60.0070.01016.98
7.2.50.0100.00716.91
7.2.40.0120.00317.03
7.2.30.0050.00516.98
7.2.20.0090.00616.92
7.2.10.0150.00016.73
7.2.00.0040.00818.26
7.1.330.0060.00615.71
7.1.320.0060.01215.61
7.1.310.0030.01615.61
7.1.300.0040.00815.61
7.1.290.0030.01015.79
7.1.280.0040.00815.49
7.1.270.0000.01115.69
7.1.260.0070.00715.73
7.1.250.0090.00015.78
7.1.240.0090.00615.83
7.1.230.0130.00015.78
7.1.220.0040.00815.68
7.1.210.0070.01015.64
7.1.200.0000.01215.75
7.1.190.0040.00415.67
7.1.180.0090.00315.86
7.1.170.0070.00715.57
7.1.160.0030.00915.57
7.1.150.0090.00615.70
7.1.140.0030.01015.57
7.1.130.0150.00315.45
7.1.120.0030.01315.55
7.1.110.0000.01015.75
7.1.100.0040.01115.84
7.1.90.0040.00815.74
7.1.80.0070.00715.83
7.1.70.0070.00316.45
7.1.60.0050.01417.43
7.1.50.0070.00716.46
7.1.40.0130.00015.71
7.1.30.0090.00615.66
7.1.20.0080.00815.65
7.1.10.0100.00615.79
7.1.00.0050.02118.83
7.0.330.0030.00915.12
7.0.320.0090.00315.38
7.0.310.0030.00915.55
7.0.300.0070.00315.21
7.0.290.0000.00815.30
7.0.280.0070.01115.20
7.0.270.0110.00615.43
7.0.260.0060.00615.28
7.0.250.0030.00915.47
7.0.240.0030.01415.48
7.0.230.0030.00915.08
7.0.220.0070.00715.44
7.0.210.0000.01415.53
7.0.200.0060.00515.06
7.0.190.0040.01115.11
7.0.180.0080.00415.53
7.0.170.0030.01015.41
7.0.160.0000.01515.47
7.0.150.0000.01415.48
7.0.140.0080.03818.68
7.0.130.0050.00515.41
7.0.120.0040.00415.25
7.0.110.0000.01315.45
7.0.100.0170.04517.74
7.0.90.0150.04317.72
7.0.80.0150.04417.62
7.0.70.0180.04217.68
7.0.60.0150.02717.71
7.0.50.0220.04217.88
7.0.40.0070.04816.80
7.0.30.0100.04316.65
7.0.20.0030.04716.69
7.0.10.0070.04216.81
7.0.00.0120.04016.70
5.6.400.0030.01014.02
5.6.390.0030.01314.32
5.6.380.0060.00314.56
5.6.370.0100.00714.52
5.6.360.0140.00014.16
5.6.350.0040.00714.36
5.6.340.0130.00314.04
5.6.330.0070.00714.56
5.6.320.0060.00914.25
5.6.310.0030.01014.34
5.6.300.0040.00814.45
5.6.290.0070.00314.63
5.6.280.0030.01014.38
5.6.270.0040.01014.71
5.6.260.0120.00314.17
5.6.250.0100.04317.46
5.6.240.0070.04617.53
5.6.230.0050.04617.41
5.6.220.0000.04017.46
5.6.210.0070.03217.56
5.6.200.0090.04017.78
5.6.190.0070.04917.61
5.6.180.0100.03317.68
5.6.170.0050.04117.80
5.6.160.0110.04017.88
5.6.150.0060.04117.49
5.6.140.0060.04517.75
5.6.130.0130.03817.63
5.6.120.0090.04117.63
5.6.110.0100.04417.68
5.6.100.0030.05217.77
5.6.90.0150.04017.71
5.6.80.0080.04117.31
5.6.70.0120.04217.23
5.6.60.0120.03617.39
5.6.50.0120.04017.45
5.6.40.0100.02717.43
5.6.30.0070.04617.35
5.6.20.0090.04417.43
5.6.10.0080.04717.28
5.6.00.0060.04517.30
5.5.380.0090.04317.35
5.5.370.0020.04517.47
5.5.360.0000.03417.46
5.5.350.0060.03717.44
5.5.340.0020.05117.78
5.5.330.0130.03517.61
5.5.320.0050.03617.67
5.5.310.0070.04417.62
5.5.300.0090.03517.73
5.5.290.0030.04617.49
5.5.280.0090.04417.61
5.5.270.0050.04517.64
5.5.260.0120.04417.56
5.5.250.0050.03217.34
5.5.240.0080.04417.30
5.5.230.0020.05117.15
5.5.220.0080.04217.30
5.5.210.0070.04317.27
5.5.200.0050.04617.32
5.5.190.0080.03317.27
5.5.180.0080.03817.25
5.5.170.0040.01214.19
5.5.160.0080.03417.13
5.5.150.0120.04017.08
5.5.140.0090.04517.18
5.5.130.0050.04217.31
5.5.120.0070.03617.16
5.5.110.0020.04617.18
5.5.100.0100.04117.21
5.5.90.0100.03817.11
5.5.80.0050.02517.20
5.5.70.0060.02717.24
5.5.60.0030.03117.07
5.5.50.0110.04017.14
5.5.40.0080.02517.09
5.5.30.0070.03917.05
5.5.20.0050.03417.10
5.5.10.0030.02517.12
5.5.00.0070.02217.07
5.4.450.0080.04315.98
5.4.440.0200.02316.08
5.4.430.0100.03915.97
5.4.420.0070.04216.07
5.4.410.0030.03616.07
5.4.400.0030.04515.94
5.4.390.0080.04315.93
5.4.380.0090.03815.88
5.4.370.0090.04015.93
5.4.360.0100.04115.88
5.4.350.0050.03715.88
5.4.340.0020.04115.82
5.4.330.0000.00712.72
5.4.320.0070.04115.91
5.4.310.0100.03715.88
5.4.300.0070.03315.95
5.4.290.0040.04315.98
5.4.280.0120.03715.93
5.4.270.0100.02815.93
5.4.260.0070.04015.82
5.4.250.0050.04315.82
5.4.240.0050.04215.92
5.4.230.0050.03715.81
5.4.220.0090.04115.82
5.4.210.0030.03615.99
5.4.200.0050.03615.93
5.4.190.0080.03915.88
5.4.180.0080.02515.88
5.4.170.0050.02215.91
5.4.160.0050.02515.90
5.4.150.0060.01815.97
5.4.140.0050.02214.54
5.4.130.0050.01914.54
5.4.120.0000.03314.54
5.4.110.0070.03714.62
5.4.100.0030.01814.59
5.4.90.0030.03514.58
5.4.80.0000.02414.59
5.4.70.0060.02414.61
5.4.60.0070.03714.52
5.4.50.0020.03914.61
5.4.40.0020.02814.59
5.4.30.0070.01514.52
5.4.20.0040.02214.60
5.4.10.0040.01914.55
5.4.00.0030.02014.26
5.3.290.0060.04313.75
5.3.280.0050.04313.63
5.3.270.0130.01313.64
5.3.260.0020.02313.71
5.3.250.0020.02213.67
5.3.240.0010.02313.66
5.3.230.0020.02513.67
5.3.220.0030.02313.65
5.3.210.0060.01913.63
5.3.200.0080.01513.61
5.3.190.0030.03513.60
5.3.180.0030.02313.70
5.3.170.0020.02813.66
5.3.160.0000.02713.68
5.3.150.0020.02413.69
5.3.140.0030.02713.63
5.3.130.0030.02213.66
5.3.120.0030.02213.67
5.3.110.0030.02313.63
5.3.100.0040.02113.41
5.3.90.0030.02013.40
5.3.80.0030.02013.42
5.3.70.0030.03213.39
5.3.60.0030.02413.39
5.3.50.0030.02313.34
5.3.40.0060.02313.39
5.3.30.0030.02113.33
5.3.20.0000.02913.26
5.3.10.0030.01913.16
5.3.00.0020.02113.17
5.2.170.0030.05712.66
5.2.160.0000.03712.66
5.2.150.0030.04012.66
5.2.140.0000.02712.66
5.2.130.0100.04712.66
5.2.120.0030.03012.66
5.2.110.0030.02712.66
5.2.100.0000.05012.66
5.2.90.0030.02012.66
5.2.80.0030.02312.66
5.2.70.0030.03012.66
5.2.60.0000.03012.66
5.2.50.0030.03712.66
5.2.40.0030.02712.66
5.2.30.0000.03712.66
5.2.20.0000.03012.66
5.2.10.0000.03012.66
5.2.00.0030.05012.66
5.1.60.0000.03712.66
5.1.50.0000.02312.66
5.1.40.0030.02712.66
5.1.30.0000.03712.66
5.1.20.0000.04012.66
5.1.10.0100.04012.66
5.1.00.0070.05012.66
5.0.50.0070.04712.66
5.0.40.0070.02712.66
5.0.30.0000.05312.66
5.0.20.0030.04312.66
5.0.10.0030.04012.66
5.0.00.0100.05012.66
4.4.90.0070.01012.66
4.4.80.0070.02012.66
4.4.70.0000.01712.66
4.4.60.0000.01712.66
4.4.50.0000.01312.66
4.4.40.0000.02312.66
4.4.30.0000.01312.66
4.4.20.0000.02012.66
4.4.10.0000.03012.66
4.4.00.0030.05712.66
4.3.110.0070.02312.66
4.3.100.0030.03012.66
4.3.90.0100.02712.66
4.3.80.0070.05012.66
4.3.70.0030.03012.66
4.3.60.0030.03312.66
4.3.50.0070.03312.66
4.3.40.0000.04712.66
4.3.30.0000.03012.66
4.3.20.0000.03012.66
4.3.10.0000.03312.66
4.3.00.0000.04012.66

preferences:
36.13 ms | 401 KiB | 5 Q