3v4l.org

run code in 300+ PHP versions simultaneously
<?php function random_str($length, $keyspace = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ') { $str = ''; $max = mb_strlen($keyspace, '8bit') - 1; for ($i = 0; $i < $length; ++$i) { $str .= $keyspace[random_int(0, $max)]; } return $str; } var_dump(random_str(32)); var_dump(random_str(8, 'abcdefghijklmnopqrstuvwxyz'));

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)
7.4.00.0060.01314.87
7.3.120.0090.00614.69
7.3.110.0090.00414.97
7.3.100.0070.00914.68
7.3.90.0060.00914.91
7.3.80.0050.00614.68
7.3.70.0080.00514.77
7.3.60.0020.01014.97
7.3.50.0050.00814.77
7.3.40.0050.01014.78
7.3.30.0030.00814.80
7.3.20.0060.01016.70
7.3.10.0030.00816.77
7.3.00.0100.00516.61
7.2.250.0000.01715.04
7.2.240.0100.00615.25
7.2.230.0070.00715.31
7.2.220.0070.00915.02
7.2.210.0040.01015.12
7.2.200.0060.01114.97
7.2.190.0020.01214.93
7.2.180.0060.00915.18
7.2.170.0050.01015.08
7.2.160.0100.00514.86
7.2.150.0060.00716.90
7.2.140.0020.01316.96
7.2.130.0040.00916.99
7.2.120.0050.01117.01
7.2.110.0030.01216.85
7.2.100.0080.00617.03
7.2.90.0060.00716.97
7.2.80.0070.00817.11
7.2.70.0040.01016.99
7.2.60.0070.00716.95
7.2.50.0100.00517.01
7.2.40.0090.00716.93
7.2.30.0080.00716.84
7.2.20.0050.01016.83
7.2.10.0040.01217.04
7.2.00.0030.00917.75
7.1.330.0040.01215.81
7.1.320.0000.01415.90
7.1.310.0030.00816.00
7.1.300.0060.00915.73
7.1.290.0050.00715.62
7.1.280.0040.00715.93
7.1.270.0080.00815.77
7.1.260.0060.00815.75
7.1.250.0060.00815.84
7.1.240.0070.00415.82
7.1.230.0110.00415.77
7.1.220.0040.00715.79
7.1.210.0070.00715.72
7.1.200.0030.00915.94
7.1.190.0000.01515.94
7.1.180.0070.00415.75
7.1.170.0060.00615.74
7.1.160.0060.00915.68
7.1.150.0120.00315.92
7.1.140.0100.00715.91
7.1.130.0070.00615.94
7.1.120.0040.00715.57
7.1.110.0070.00715.75
7.1.100.0070.00317.01
7.1.90.0080.00415.77
7.1.80.0100.00315.93
7.1.70.0050.00716.42
7.1.60.0080.00816.60
7.1.50.0050.01116.49
7.1.40.0000.01016.54
7.1.30.0070.00416.41
7.1.20.0050.01016.41
7.1.10.0030.00816.49
7.1.00.0070.00516.57
7.0.330.0070.00715.57
7.0.320.0070.00715.45
7.0.310.0060.00615.44
7.0.300.0040.00815.40
7.0.290.0060.00915.47
7.0.280.0030.01215.60
7.0.270.0060.00615.50
7.0.260.0000.01415.50
7.0.250.0060.00615.60
7.0.240.0040.00815.65
7.0.230.0090.00615.54
7.0.220.0060.00615.50
7.0.210.0060.00615.50
7.0.200.0080.00316.15
7.0.190.0030.00816.20
7.0.180.0060.00516.34
7.0.170.0060.00616.32
7.0.160.0070.00516.31
7.0.150.0030.00716.40
7.0.140.0050.00816.28
7.0.130.0000.01016.32
7.0.120.0020.01116.34
7.0.110.0030.01016.32
7.0.100.0070.00516.36
7.0.90.0000.01416.32
7.0.80.0030.00616.23
7.0.70.0010.00716.29
7.0.60.0030.00916.29
7.0.50.0040.00616.24
7.0.40.0040.00815.33
7.0.30.0080.00515.21
7.0.20.0050.00515.25
7.0.10.0020.00815.30
7.0.00.0050.00515.21
5.6.400.0120.00314.16
5.6.390.0050.00514.14
5.6.380.0060.00814.55
5.6.370.0080.00414.47
5.6.360.0080.00814.37
5.6.350.0070.01014.25
5.6.340.0060.01014.13
5.6.330.0070.00713.96
5.6.320.0060.00314.44
5.6.310.0060.00614.26
5.6.300.0030.00914.30
5.6.290.0050.00313.90
5.6.280.0060.00614.29
5.6.270.0000.01114.19
5.6.260.0000.01414.62
5.6.250.0030.01413.98
5.6.240.0030.01514.51
5.6.230.0070.00714.28
5.6.220.0030.00814.42
5.6.210.0030.01414.11
5.6.200.0030.00614.07
5.6.190.0000.01114.49
5.6.180.0100.00314.44
5.6.170.0060.00614.25
5.6.160.0120.00414.50
5.6.150.0040.00814.20
5.6.140.0100.00314.05
5.6.130.0070.00714.30
5.6.120.0090.00614.53
5.6.110.0000.01514.36
5.6.100.0030.01014.15
5.6.90.0060.00614.46
5.6.80.0070.00714.26
5.6.70.0090.00014.37
5.6.60.0070.00714.29
5.6.50.0040.00714.52
5.6.40.0040.00814.26
5.6.30.0100.00714.32
5.6.20.0090.00314.43
5.6.10.0040.01114.09
5.6.00.0120.00314.26

preferences:
37.87 ms | 400 KiB | 5 Q