3v4l.org

run code in 300+ PHP versions simultaneously
<?php $token = uniqid('', true); var_dump($token); $token = uniqid(mt_rand(), true); var_dump($token); $bytes = openssl_random_pseudo_bytes(4); $hex = bin2hex($bytes); var_dump($bytes); var_dump($hex);

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)
7.3.10.0000.01316.33
7.3.00.0140.00016.68
7.2.130.0060.00317.02
7.2.120.0080.00416.73
7.2.110.0110.00316.73
7.2.100.0000.01516.94
7.2.90.0040.01116.80
7.2.80.0030.01016.91
7.2.70.0070.00716.89
7.2.60.0140.00316.93
7.2.50.0150.00016.78
7.2.40.0090.00616.67
7.2.30.0000.01116.75
7.2.20.0070.00716.61
7.2.10.0030.00916.85
7.2.00.0050.00917.96
7.1.250.0070.00315.83
7.1.70.0050.00317.27
7.1.60.0120.01219.70
7.1.50.0070.01416.73
7.1.00.0070.07322.41
7.0.200.0000.00916.77
7.0.140.0070.07322.01
7.0.110.0030.08320.00
7.0.100.0130.06019.90
7.0.90.0100.08020.03
7.0.80.0130.07719.91
7.0.70.0170.06719.96
7.0.60.0030.08720.09
7.0.50.0130.07720.31
7.0.40.0070.07720.12
7.0.30.0000.09020.23
7.0.20.0100.08020.27
7.0.10.0000.08320.05
7.0.00.0030.08720.03
5.6.280.0000.07721.14
5.6.250.0130.07320.67
5.6.240.0100.08020.57
5.6.230.0130.05320.88
5.6.220.0100.07320.64
5.6.210.0100.07720.55
5.6.200.0070.08721.02
5.6.190.0030.09021.25
5.6.180.0100.07320.95
5.6.170.0070.08021.16
5.6.160.0130.08021.04
5.6.150.0070.08021.05
5.6.140.0030.05321.11
5.6.130.0070.08321.25
5.6.120.0070.08021.05
5.6.110.0070.05721.27
5.6.100.0130.08021.24
5.6.90.0070.05321.03
5.6.80.0070.07720.53
5.6.70.0070.08020.54
5.6.60.0070.08020.42
5.6.50.0100.07720.33
5.6.40.0100.07720.27
5.6.30.0000.08320.57
5.6.20.0030.04320.63
5.6.10.0130.06320.63
5.6.00.0100.07320.51
5.5.380.0000.08320.30
5.5.370.0070.07720.59
5.5.360.0070.06020.55
5.5.350.0100.08020.54
5.5.340.0130.07721.00
5.5.330.0100.08020.95
5.5.320.0170.07020.69
5.5.310.0170.06720.69
5.5.300.0270.06320.83
5.5.290.0070.08320.73
5.5.280.0170.07320.83
5.5.270.0100.07320.99
5.5.260.0100.07720.88
5.5.250.0030.06020.54
5.5.240.0170.06720.22
5.5.230.0030.07020.38
5.5.220.0000.08320.25
5.5.210.0100.08020.30
5.5.200.0100.08020.02
5.5.190.0130.08020.15
5.5.180.0130.07320.16
5.5.160.0100.07320.08
5.5.150.0070.08720.32
5.5.140.0030.07720.04
5.5.130.0070.04720.27
5.5.120.0070.07720.15
5.5.110.0070.06720.31
5.5.100.0070.07320.20
5.5.90.0130.05720.00
5.5.80.0170.06720.13
5.5.70.0070.07720.00
5.5.60.0270.06320.23
5.5.50.0070.07720.18
5.5.40.0030.08719.97
5.5.30.0100.08020.23
5.5.20.0130.04720.21
5.5.10.0100.07320.16
5.5.00.0230.04720.02
5.4.450.0100.08019.50
5.4.440.0100.07719.50
5.4.430.0130.07319.50
5.4.420.0070.08019.50
5.4.410.0130.07019.12
5.4.400.0030.08319.00
5.4.390.0100.06019.01
5.4.380.0030.08319.07
5.4.370.0070.07719.22
5.4.360.0100.07019.00
5.4.350.0030.06719.01
5.4.340.0130.07319.18
5.4.320.0000.08019.23
5.4.310.0030.07719.02
5.4.300.0030.07719.08
5.4.290.0200.06719.04
5.4.280.0100.04319.05
5.4.270.0100.06719.18
5.4.260.0000.05319.02
5.4.250.0130.06719.22
5.4.240.0030.07719.33
5.4.230.0070.08019.16
5.4.220.0130.07319.05
5.4.210.0130.06719.02
5.4.200.0030.06318.99
5.4.190.0030.07719.17
5.4.180.0030.07719.00
5.4.170.0130.07318.94
5.4.160.0130.06719.07
5.4.150.0070.06719.31
5.4.140.0030.07316.37
5.4.130.0030.07716.34
5.4.120.0100.06316.26
5.4.110.0070.07716.50
5.4.100.0070.07016.28
5.4.90.0130.07316.49
5.4.80.0100.07016.17
5.4.70.0130.06316.23
5.4.60.0070.06716.34
5.4.50.0070.07316.45
5.4.40.0100.06016.26
5.4.30.0030.08016.51
5.4.20.0000.08016.33
5.4.10.0130.06716.46
5.4.00.0070.07315.87
5.3.290.0130.06714.70
5.3.280.0100.03714.44
5.3.270.0070.07714.48
5.3.260.0100.06714.39
5.3.250.0100.07314.60
5.3.240.0070.06714.47
5.3.230.0030.08014.48
5.3.220.0030.08014.43
5.3.210.0130.07014.66
5.3.200.0070.07714.56
5.3.190.0100.07014.56
5.3.180.0030.06014.35
5.3.170.0070.05014.39
5.3.160.0030.08314.35
5.3.150.0100.07314.63
5.3.140.0030.07714.45
5.3.130.0100.07014.58
5.3.120.0070.08014.43
5.3.110.0030.07714.39
5.3.100.0070.07714.13
5.3.90.0070.07713.91
5.3.80.0000.08014.03
5.3.70.0100.07314.03
5.3.60.0100.06013.84
5.3.50.0100.07013.96
5.3.40.0070.07313.87
5.3.30.0070.07013.91
5.3.20.0170.03713.47
5.3.10.0070.05313.67
5.3.00.0100.07313.51
5.2.170.0070.06011.14
5.2.160.0030.06711.20
5.2.150.0100.05311.21
5.2.140.0100.05711.14
5.2.130.0030.05311.11
5.2.120.0070.05711.26
5.2.110.0030.04011.05
5.2.100.0030.06311.04
5.2.90.0030.06011.14
5.2.80.0100.05011.02
5.2.70.0000.04010.88
5.2.60.0000.03710.98
5.2.50.0000.05710.94
5.2.40.0030.02710.94
5.2.30.0030.03711.01
5.2.20.0000.03310.98
5.2.10.0000.03010.93
5.2.00.0000.03310.94
5.1.60.0030.02310.66
5.1.50.0000.02710.66
5.1.40.0030.02310.66
5.1.30.0070.03010.66
5.1.20.0000.03010.66
5.1.10.0000.05710.66
5.1.00.0070.03010.66
5.0.50.0030.03010.66
5.0.40.0070.03710.66
5.0.30.0030.03710.66
5.0.20.0030.02710.66
5.0.10.0030.02310.66
5.0.00.0030.02710.66
4.4.90.0070.02710.66
4.4.80.0030.01310.66
4.4.70.0030.03010.66
4.4.60.0000.01310.66
4.4.50.0030.01310.66
4.4.40.0000.02310.66
4.4.30.0000.04010.66
4.4.20.0000.01710.66
4.4.10.0030.02010.66
4.4.00.0030.02310.66
4.3.110.0000.02710.66
4.3.100.0000.01310.66
4.3.90.0000.01710.66
4.3.80.0000.02710.66
4.3.70.0000.01310.66
4.3.60.0030.02710.66
4.3.50.0000.02310.66
4.3.40.0030.02010.66
4.3.30.0000.01310.66
4.3.20.0030.02010.66
4.3.10.0000.02310.66
4.3.00.0000.01710.66

preferences:
36.52 ms | 401 KiB | 5 Q