3v4l.org

run code in 300+ PHP versions simultaneously
<?php function random_str($length, $keyspace = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ') { $pieces = []; $max = mb_strlen($keyspace, '8bit') - 1; for ($i = 0; $i < $length; ++$i) { $pieces []= $keyspace[random_int(0, $max)]; } return implode('', $pieces); } 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)
8.1.60.0170.00017.62
8.1.50.0150.00317.60
8.1.40.0090.00917.46
8.1.30.0150.00317.70
8.1.20.0100.00617.68
8.1.10.0130.00317.67
8.1.00.0090.00617.44
8.0.190.0080.00416.86
8.0.180.0110.00416.80
8.0.170.0140.00016.81
8.0.160.0150.00016.66
8.0.150.0060.00616.67
8.0.140.0080.00716.77
8.0.130.0060.00616.85
8.0.120.0080.00516.78
8.0.110.0030.00816.86
8.0.100.0070.00516.76
8.0.90.0100.00116.85
8.0.80.0060.00416.84
8.0.70.0080.00416.77
8.0.60.0060.00416.87
8.0.50.0040.00516.81
8.0.30.0050.00516.82
8.0.20.0060.00516.87
8.0.10.0080.00216.87
8.0.00.0020.00816.87
7.4.290.0130.00416.64
7.4.280.0140.00316.59
7.4.270.0130.00416.48
7.4.260.0050.01016.52
7.4.250.0100.00416.49
7.4.240.0100.00416.44
7.4.230.0100.00316.46
7.4.220.0070.00416.50
7.4.210.0090.00216.60
7.4.200.0050.00516.58
7.4.190.0040.00616.49
7.4.180.0090.00216.61
7.4.160.0060.00316.50
7.4.150.0060.00416.49
7.4.140.0060.00416.41
7.4.130.0060.00416.47
7.4.120.0070.00516.48
7.4.110.0110.00116.42
7.4.100.0050.00716.56
7.4.90.0080.00416.50
7.4.80.0100.00216.43
7.4.70.0090.00416.46
7.4.60.0060.00616.54
7.4.50.0100.00316.43
7.4.40.0070.00516.40
7.4.30.0040.00716.45
7.4.20.0030.00616.39
7.4.10.0060.00216.50
7.4.00.0060.00416.46
7.3.330.0130.00716.29
7.3.320.0160.00416.21
7.3.310.0080.00616.23
7.3.300.0100.00616.18
7.3.290.0070.00516.25
7.3.280.0070.00516.25
7.3.270.0080.00416.25
7.3.260.0090.00416.25
7.3.250.0080.00416.29
7.3.240.0090.00316.25
7.3.230.0090.00416.26
7.3.220.0090.00416.27
7.3.210.0110.00216.25
7.3.200.0120.00316.21
7.3.190.0070.00816.18
7.3.180.0100.00416.26
7.3.170.0080.00516.30
7.3.160.0070.00516.29
7.3.150.0070.00616.23
7.3.140.0060.00716.22
7.3.130.0080.00416.17
7.3.120.0100.00216.26
7.3.110.0100.00316.20
7.3.100.0070.00715.90
7.3.90.0090.00416.14
7.3.80.0120.00215.90
7.3.70.0100.00815.77
7.3.60.0080.00515.71
7.3.50.0070.00615.55
7.3.40.0090.00415.52
7.3.30.0080.00515.47
7.3.20.0150.00616.60
7.3.10.0110.00716.53
7.3.00.0790.00616.45
7.2.340.0080.00516.33
7.2.330.0080.00616.37
7.2.320.0100.00416.37
7.2.310.0090.00616.32
7.2.300.0100.00416.31
7.2.290.0100.00516.28
7.2.280.0110.00416.33
7.2.270.0100.00316.28
7.2.260.0080.00516.29
7.2.250.0100.00416.29
7.2.240.0110.00316.29
7.2.230.0090.00515.98
7.2.220.0080.00716.05
7.2.210.0070.00816.12
7.2.200.0080.00715.93
7.2.190.0090.00515.82
7.2.180.0080.00515.68
7.2.170.0100.00515.73
7.2.160.0070.00715.60
7.2.150.0110.00516.74
7.2.140.0140.00716.67
7.2.130.0730.00716.73
7.2.120.0630.00616.80
7.2.110.0520.00716.76
7.2.100.0450.00616.74
7.2.90.0450.00616.64
7.2.80.0410.00616.71
7.2.70.0400.00716.52
7.2.60.0420.00716.56
7.2.50.0400.00716.58
7.2.40.0370.00516.60
7.2.30.0280.00916.57
7.2.20.0490.00816.60
7.2.10.0410.00816.57
7.2.00.0400.00616.60
7.1.330.0100.00316.91
7.1.320.0100.00416.30
7.1.310.0080.00516.29
7.1.300.0070.00715.85
7.1.290.0090.00515.89
7.1.280.0060.00815.91
7.1.270.0660.00615.65
7.1.260.0080.00615.58
7.1.250.0410.00615.63
7.1.240.0770.00615.66
7.1.230.0520.00415.65
7.1.220.0580.00515.65
7.1.210.0550.00615.63
7.1.200.0470.00915.63
7.1.190.0470.00415.72
7.1.180.0470.00615.64
7.1.170.0390.00615.46
7.1.160.0420.00715.47
7.1.150.0410.00815.34
7.1.140.0450.00815.51
7.1.130.0450.00615.43
7.1.120.0580.00515.46
7.1.110.0500.00515.53
7.1.100.0580.00815.45
7.1.90.0270.00715.50
7.1.80.0300.00615.46
7.1.70.0250.00815.42
7.1.60.0310.00517.29
7.1.50.0340.00717.22
7.1.40.0290.00717.30
7.1.30.0340.00617.29
7.1.20.0310.00617.27
7.1.10.0300.00815.42
7.1.00.0270.00715.41
7.0.330.1320.00415.22
7.0.320.0110.00215.98
7.0.310.0110.00415.96
7.0.300.0230.00615.53
7.0.290.0060.00715.89
7.0.280.0120.00215.91
7.0.270.0080.00515.91
7.0.260.0120.00415.81
7.0.250.0090.00616.05
7.0.240.0100.00316.02
7.0.230.0080.00616.02
7.0.220.0060.00815.90
7.0.210.0090.00515.98
7.0.200.0120.00316.03
7.0.190.0110.00416.00
7.0.180.0100.00415.96
7.0.170.0100.00416.07
7.0.160.0100.00415.92
7.0.150.0110.00415.93
7.0.140.0100.00415.95
7.0.130.0100.00416.13
7.0.120.0100.00516.03
7.0.110.0070.00615.98
7.0.100.0100.00515.94
7.0.90.0110.00815.93
7.0.80.0070.00615.80
7.0.70.0090.00515.88
7.0.60.0130.00315.99
7.0.50.0090.00515.88
7.0.40.0120.00516.00
7.0.30.0110.00416.06
7.0.20.0100.00415.98
7.0.10.0110.00215.92
7.0.00.0070.00715.98
5.6.400.0080.00914.95
5.6.390.0100.00814.93
5.6.380.0110.00714.93
5.6.370.0080.00515.36
5.6.360.0080.00515.49
5.6.350.0100.00315.32
5.6.340.0080.00515.36
5.6.330.0080.00615.43
5.6.320.0090.00515.43
5.6.310.0070.00715.39
5.6.300.0100.00415.18
5.6.290.0080.00615.36
5.6.280.0070.00715.43
5.6.270.0100.00315.42
5.6.260.0080.00515.39
5.6.250.0060.00815.57
5.6.240.0100.00415.56
5.6.230.0080.00515.50
5.6.220.0110.00315.54
5.6.210.0110.00515.53
5.6.200.0100.00415.55
5.6.190.0090.00615.67
5.6.180.0080.00715.57
5.6.170.0090.00715.48
5.6.160.0080.00615.56
5.6.150.0100.00515.52
5.6.140.0090.00515.56
5.6.130.0090.00615.47
5.6.120.0090.00515.53
5.6.110.0070.00815.40
5.6.100.0090.00515.45
5.6.90.0120.00315.38
5.6.80.0080.00515.40
5.6.70.0070.00715.52
5.6.60.0080.00615.50
5.6.50.0090.00515.43
5.6.40.0110.00315.43
5.6.30.0090.00515.36
5.6.20.0090.00515.44
5.6.10.0090.00415.38
5.6.00.0110.00315.46

preferences:
45.68 ms | 401 KiB | 5 Q