3v4l.org

run code in 300+ PHP versions simultaneously
<?php function randomString($length = 6) { $str = ""; $characters = array_merge(range('a','z'), range('0','9')); $max = count($characters) - 1; for ($i = 0; $i < $length; $i++) { $rand = mt_rand(0, $max); $str .= $characters[$rand]; } return $str . timestamp(); } echo randomString();

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)
7.4.10.0100.01015.03
7.4.00.0060.01314.97
7.3.130.0050.01214.85
7.3.120.0080.01114.74
7.3.110.0050.01214.84
7.3.100.0070.00814.89
7.3.90.0050.00514.86
7.3.80.0050.00914.80
7.3.70.0060.00614.77
7.3.60.0090.00714.70
7.3.50.0070.00814.85
7.3.40.0090.00414.76
7.3.30.0040.01014.75
7.3.20.0090.00416.71
7.3.10.0070.00516.61
7.3.00.0070.00616.52
7.2.260.0090.00915.11
7.2.250.0040.01314.97
7.2.240.0080.00914.98
7.2.230.0070.00815.10
7.2.220.0050.00915.07
7.2.210.0070.00815.02
7.2.200.0050.00714.98
7.2.190.0060.00815.00
7.2.180.0040.01215.03
7.2.170.0060.00615.03
7.2.160.0080.00815.02
7.2.150.0060.00816.78
7.2.140.0050.00817.07
7.2.130.0060.01016.80
7.2.120.0030.01216.84
7.2.110.0060.00617.04
7.2.100.0080.00616.86
7.2.90.0030.01116.71
7.2.80.0020.01016.74
7.2.70.0060.00516.89
7.2.60.0050.00717.02
7.2.50.0030.01016.98
7.2.40.0050.00916.85
7.2.30.0050.01116.94
7.2.20.0000.01216.82
7.2.10.0050.00817.00
7.2.00.0020.01117.66
7.1.330.0080.00715.73
7.1.320.0070.00815.88
7.1.310.0070.00615.85
7.1.300.0070.00715.76
7.1.290.0080.00615.61
7.1.280.0060.00815.79
7.1.270.0040.00615.71
7.1.260.0070.00615.81
7.1.250.0030.00915.81
7.1.240.0060.00715.95
7.1.230.0060.00515.63
7.1.220.0040.00515.80
7.1.210.0030.00815.79
7.1.200.0090.00615.85
7.1.190.0020.01115.81
7.1.180.0080.00615.77
7.1.170.0040.00815.71
7.1.160.0040.00515.81
7.1.150.0050.00515.67
7.1.140.0060.00515.94
7.1.130.0080.00515.81
7.1.120.0070.00815.81
7.1.110.0050.00715.69
7.1.100.0050.00615.65
7.1.90.0040.00915.75
7.1.80.0030.00915.90
7.1.70.0070.00616.29
7.1.60.0100.00717.13
7.1.50.0030.01116.27
7.1.40.0080.00315.85
7.1.30.0110.00315.96
7.1.20.0040.01015.66
7.1.10.0030.01115.75
7.1.00.0070.02817.96
7.0.330.0120.00215.32
7.0.320.0090.00415.38
7.0.310.0050.01015.37
7.0.300.0030.00915.47
7.0.290.0040.00815.46
7.0.280.0100.00415.32
7.0.270.0050.00915.32
7.0.260.0060.00615.39
7.0.250.0040.00815.38
7.0.240.0050.01015.59
7.0.230.0050.01015.34
7.0.220.0020.01215.38
7.0.210.0060.00815.50
7.0.200.0110.00615.81
7.0.190.0050.00515.42
7.0.180.0060.00815.45
7.0.170.0020.00715.38
7.0.160.0060.00415.50
7.0.150.0090.00315.30
7.0.140.0050.02917.59
7.0.130.0020.01015.60
7.0.120.0050.00915.42
7.0.110.0030.00915.53
7.0.100.0050.01015.41
7.0.90.0030.01015.47
7.0.80.0060.00515.54
7.0.70.0050.00815.43
7.0.60.0060.03216.93
7.0.50.0060.03316.22
7.0.40.0050.03515.74
7.0.30.0240.02615.74
7.0.20.0140.02415.69
7.0.10.0020.02215.79
7.0.00.0030.02115.79
5.6.400.0020.01114.23
5.6.390.0000.01114.44
5.6.380.0090.00514.51
5.6.370.0050.01114.32
5.6.360.0050.00714.18
5.6.350.0050.00914.20
5.6.340.0060.00914.49
5.6.330.0080.00714.49
5.6.320.0030.01014.42
5.6.310.0050.00714.56
5.6.300.0070.00714.51
5.6.290.0070.00614.65
5.6.280.0070.02916.64
5.6.270.0020.01414.34
5.6.260.0060.01114.65
5.6.250.0020.01114.34
5.6.240.0070.00514.48
5.6.230.0030.00914.51
5.6.220.0000.01314.24
5.6.210.0070.02416.39
5.6.200.0060.02615.68
5.6.190.0040.02116.57
5.6.180.1350.02316.41
5.6.170.0170.02616.41
5.6.160.0050.03216.49
5.6.150.0060.02915.64
5.6.140.0010.02115.60
5.6.130.0080.02915.64
5.6.120.0070.02716.43
5.6.110.0080.02716.56
5.6.100.0070.03516.55
5.6.90.0030.03016.47
5.6.80.0110.02516.34
5.6.70.1450.01516.34
5.6.60.0040.00814.28
5.6.50.0070.00714.35
5.6.40.0100.00314.33
5.6.30.0060.00814.26
5.6.20.0080.00214.34
5.6.10.0080.00314.27
5.6.00.0020.01114.36
5.5.380.0050.00814.44
5.5.370.0060.00614.47
5.5.360.0050.00614.14
5.5.350.0070.02716.15
5.5.340.0090.02815.53
5.5.330.0050.01916.43
5.5.320.0120.03216.18
5.5.310.0090.02916.51
5.5.300.0050.03315.51
5.5.290.0060.02115.47
5.5.280.0090.02916.58
5.5.270.0080.02616.43
5.5.260.0080.02916.38
5.5.250.0060.01916.37
5.5.240.0120.02116.22
5.5.230.0110.00314.32
5.5.220.0040.00814.15
5.5.210.0020.01114.31
5.5.200.0050.00514.39
5.5.190.0050.00814.44
5.5.180.0060.00514.34
5.5.170.0050.01014.26
5.5.160.0030.00914.32
5.5.150.0100.00514.12
5.5.140.0060.00914.40
5.5.130.0070.00914.12
5.5.120.0060.00614.02
5.5.110.0040.00814.11
5.5.100.0090.00514.33
5.5.90.0050.01014.41
5.5.80.0060.01014.44
5.5.70.0030.00814.30
5.5.60.0030.00814.14
5.5.50.0070.00714.40
5.5.40.0080.00314.37
5.5.30.0030.01414.55
5.5.20.0030.01114.18
5.5.10.0060.00814.20
5.5.00.0070.00814.30
5.4.450.0200.01516.81
5.4.440.0120.01716.54
5.4.430.0080.01616.16
5.4.420.0130.01416.25
5.4.410.0140.02016.23
5.4.400.0120.01516.16
5.4.390.0100.02016.22
5.4.380.0340.02213.72
5.4.370.0350.01713.72
5.4.360.0370.01813.63
5.4.350.0250.02313.58
5.4.340.0290.01813.77
5.4.330.0060.00511.31
5.4.320.0070.01911.65
5.4.310.0080.01811.70
5.4.300.0050.01911.59
5.4.290.0060.02011.65
5.4.280.0070.02211.63
5.4.270.0040.02211.58
5.4.260.0040.03611.61
5.4.250.0040.02211.63
5.4.240.0080.02011.58
5.4.230.0070.01911.55
5.4.220.0070.02111.55
5.4.210.0060.03211.55
5.4.200.0040.02211.68
5.4.190.0030.02211.58
5.4.180.0060.02011.65
5.4.170.0100.02711.63
5.4.160.0100.03511.61
5.4.150.0070.02711.55
5.4.140.0090.02311.51
5.4.130.0060.02111.50
5.4.120.0080.02311.50
5.4.110.0050.02411.51
5.4.100.0060.02311.48
5.4.90.0060.02411.44
5.4.80.0070.02311.52
5.4.70.0060.02311.51
5.4.60.0040.02711.43
5.4.50.0100.04711.43
5.4.40.0090.03011.43
5.4.30.0070.03311.42
5.4.20.0070.01911.50
5.4.10.0070.01811.44
5.4.00.0060.01911.33
5.3.290.0050.01811.69
5.3.280.0060.02111.66
5.3.270.0060.02011.66
5.3.260.0090.02511.66
5.3.250.0070.03611.66
5.3.240.0110.03911.66
5.3.230.0070.03411.66
5.3.220.0070.03211.65
5.3.210.0090.03911.65
5.3.200.0030.02111.65
5.3.190.0050.01911.65
5.3.180.0070.01911.64
5.3.170.0070.02011.64
5.3.160.0060.01811.64
5.3.150.0060.01811.64
5.3.140.0040.02211.64
5.3.130.0050.02311.64
5.3.120.0060.02011.64
5.3.110.0050.02211.64
5.3.100.0060.02111.46
5.3.90.0050.02011.46
5.3.80.0050.01811.45
5.3.70.0070.01811.45
5.3.60.0060.01911.45
5.3.50.0070.01911.43
5.3.40.0050.02111.43
5.3.30.0040.02011.42
5.3.20.0050.02011.34
5.3.10.0050.02011.33
5.3.00.0060.01911.33
5.2.170.0060.0439.23
5.2.160.0030.0419.23
5.2.150.0030.0449.23
5.2.140.0080.0399.23
5.2.130.0080.0389.18
5.2.120.0070.0399.18
5.2.110.0070.0389.19
5.2.100.0050.0409.19
5.2.90.0080.0369.19
5.2.80.0060.0419.18
5.2.70.0040.0439.18
5.2.60.0050.0419.13
5.2.50.0100.0359.10
5.2.40.0070.0369.08
5.2.30.0070.0389.06
5.2.20.0070.0379.04
5.2.10.0050.0368.95
5.2.00.0060.0318.81
5.1.60.0040.0338.09
5.1.50.0040.0358.09
5.1.40.0080.0318.07
5.1.30.0040.0378.42
5.1.20.0060.0388.44
5.1.10.0100.0328.17
5.1.00.0050.0368.17
5.0.50.0060.0306.64
5.0.40.0040.0286.51
5.0.30.0060.0396.32
5.0.20.0040.0276.29
5.0.10.0040.0296.27
5.0.00.0070.0396.26
4.4.90.0040.0234.78
4.4.80.0070.0204.75
4.4.70.0080.0194.75
4.4.60.0060.0204.75
4.4.50.0030.0224.77
4.4.40.0020.0344.71
4.4.30.0030.0214.76
4.4.20.0050.0204.84
4.4.10.0020.0234.85
4.4.00.0040.0334.75
4.3.110.0040.0234.67
4.3.100.0050.0204.67
4.3.90.0030.0224.63
4.3.80.0020.0324.59
4.3.70.0050.0194.63
4.3.60.0060.0184.63
4.3.50.0080.0174.62
4.3.40.0050.0304.54
4.3.30.0000.0243.31
4.3.20.0040.0203.29
4.3.10.0040.0203.25
4.3.00.0030.01726.12

preferences:
38.75 ms | 400 KiB | 5 Q