3v4l.org

run code in 300+ PHP versions simultaneously
<?php $randomlettersnumbers = str_shuffle('abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'); //creates a shuffled alphanumeric string $randomlettersnumbers2 = str_shuffle('0123456789!@#$%^&*()_+{}:|\<>?'); //creates a shuffled alphanumeric string $randcomb = $randomlettersnumbers.$randomlettersnumbers2; for($i = 0; $i <= 10; $i += 1) { //loop to calculate parameters for substr //$param1 = ($i+6) - 6; //this formula ensures all integers are positive and above zero //$param2 = $param1 + 6; // this formula ensures all integers increment by 6 spaces //if($param2 >= 60) { //since the second parameter goes over 60 // $param2 = ($param1 + 6) - 6; //subtract 6 //} //$key = substr($randcomb, $param1, $param2); //generate random key //echo $key."<BR>"; //display it for debugging echo substr($randcomb, 0,6); }

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)
7.4.10.0030.00914.96
7.4.00.0030.01214.88
7.3.130.0030.01214.68
7.3.120.0040.01214.71
7.3.110.0070.01014.50
7.3.100.0100.00614.62
7.3.90.0110.00314.47
7.3.80.0110.00414.83
7.3.70.0070.01014.73
7.3.60.0030.01014.76
7.3.50.0060.00914.61
7.3.40.0060.00614.34
7.3.30.0070.01114.75
7.3.20.0070.00716.48
7.3.10.0030.01316.57
7.3.00.0120.00316.29
7.2.260.0070.01314.93
7.2.250.0000.01814.93
7.2.240.0100.01015.25
7.2.230.0030.00714.89
7.2.220.0040.00714.90
7.2.210.0030.01314.82
7.2.200.0030.01214.57
7.2.190.0090.00614.90
7.2.180.0040.00815.05
7.2.170.0100.01014.75
7.2.160.0040.01115.13
7.2.150.0030.00916.72
7.2.140.0060.00916.82
7.2.130.0070.01016.95
7.2.120.0070.01016.69
7.2.110.0090.00616.78
7.2.100.0050.00516.64
7.2.90.0150.00016.93
7.2.80.0080.00816.95
7.2.70.0040.01116.84
7.2.60.0060.00516.83
7.2.50.0060.00916.45
7.2.40.0110.00416.92
7.2.30.0070.00717.04
7.2.20.0030.01316.86
7.2.10.0070.00716.84
7.2.00.0080.00618.05
7.1.330.0070.00715.90
7.1.320.0000.01515.88
7.1.310.0120.00315.47
7.1.300.0000.00916.00
7.1.290.0000.01315.47
7.1.280.0030.01615.60
7.1.270.0100.00715.74
7.1.260.0030.00915.92
7.1.250.0000.01815.48
7.1.240.0070.00715.63
7.1.230.0130.00315.73
7.1.220.0060.00615.76
7.1.210.0070.00715.64
7.1.200.0070.00615.89
7.1.190.0090.00315.82
7.1.180.0040.01115.67
7.1.170.0040.00415.88
7.1.160.0030.01015.85
7.1.150.0000.01215.56
7.1.140.0080.00315.61
7.1.130.0080.00015.70
7.1.120.0060.00815.72
7.1.110.0060.00615.76
7.1.100.0080.00316.84
7.1.90.0040.01115.65
7.1.80.0060.01015.73
7.1.70.0090.00216.45
7.1.60.0060.00517.45
7.1.50.0050.01316.39
7.1.40.0060.00915.84
7.1.30.0090.00515.82
7.1.20.0080.00815.44
7.1.10.0030.00815.87
7.1.00.0060.04019.03
7.0.330.0080.00015.16
7.0.320.0070.00715.45
7.0.310.0060.00315.04
7.0.300.0070.00715.35
7.0.290.0000.01515.32
7.0.280.0040.00715.13
7.0.270.0090.00615.15
7.0.260.0040.00715.32
7.0.250.0080.00015.66
7.0.240.0060.00615.16
7.0.230.0060.00315.36
7.0.220.0070.00715.53
7.0.210.0040.01115.21
7.0.200.0060.00715.15
7.0.190.0060.00315.61
7.0.180.0140.00015.54
7.0.170.0030.01015.58
7.0.160.0000.01415.26
7.0.150.0070.00715.36
7.0.140.0050.03818.63
7.0.130.0090.00015.49
7.0.120.0020.04418.68
7.0.110.0110.00315.30
7.0.100.0050.00515.38
7.0.90.0040.00815.52
7.0.80.0040.00815.27
7.0.70.0040.00715.41
7.0.60.0150.02017.80
7.0.50.0120.04216.55
7.0.40.0070.03917.00
7.0.30.0280.03516.76
7.0.20.0170.04316.78
7.0.10.0170.04216.71
7.0.00.0030.05016.70
5.6.400.0120.00314.24
5.6.390.0070.00714.52
5.6.380.0070.01114.28
5.6.370.0120.00414.40
5.6.360.0100.00714.36
5.6.350.0070.00714.34
5.6.340.0090.00614.45
5.6.330.0090.00614.66
5.6.320.0040.01114.24
5.6.310.0040.00414.21
5.6.300.0040.00414.32
5.6.290.0030.00714.53
5.6.280.0050.04017.61
5.6.270.0100.00314.70
5.6.260.0000.01514.45
5.6.250.0000.01214.65
5.6.240.0070.00714.31
5.6.230.0000.01414.39
5.6.220.0060.01014.36
5.6.210.0070.05017.40
5.6.200.0080.02816.37
5.6.190.0070.02717.63
5.6.180.0170.03517.46
5.6.170.0150.04317.62
5.6.160.0080.04617.39
5.6.150.0090.04516.21
5.6.140.0080.03716.27
5.6.130.0090.04316.37
5.6.120.0070.04117.68
5.6.110.0050.04417.68
5.6.100.0070.04017.62
5.6.90.0050.04417.60
5.6.80.0080.02217.32
5.6.70.0070.00314.25
5.6.60.0000.01514.56
5.6.50.0060.00314.24
5.6.40.0030.00614.22
5.6.30.0060.00614.50
5.6.20.0100.00614.18
5.6.10.0060.01014.55
5.6.00.0080.00614.34
5.5.380.0060.00914.41
5.5.370.0070.00314.10
5.5.360.0030.01314.35
5.5.350.0100.04717.20
5.5.340.0030.02716.13
5.5.330.0080.03617.13
5.5.320.0100.02817.26
5.5.310.0200.04717.42
5.5.300.0040.04316.11
5.5.290.0050.03815.95
5.5.280.0020.03217.62
5.5.270.0060.02817.52
5.5.260.0080.02117.71
5.5.250.0170.04217.40
5.5.240.0110.01717.17
5.5.230.0090.00614.29
5.5.220.0060.01014.42
5.5.210.0070.00714.29
5.5.200.0060.00614.14
5.5.190.0030.00614.36
5.5.180.0000.01514.43
5.5.170.0070.00314.44
5.5.160.0000.01314.44
5.5.150.0030.01014.42
5.5.140.0070.00714.02
5.5.130.0060.00914.17
5.5.120.0000.00914.18
5.5.110.0110.00314.11
5.5.100.0030.01314.12
5.5.90.0000.01214.34
5.5.80.0040.01114.02
5.5.70.0060.00914.41
5.5.60.0030.01014.31
5.5.50.0100.00314.27
5.5.40.0030.00914.11
5.5.30.0040.00414.40
5.5.20.0030.00614.31
5.5.10.0030.00914.34
5.5.00.0070.00713.95
5.4.450.0050.04016.43
5.4.440.0030.03016.45
5.4.430.0070.02316.39
5.4.420.0070.04016.41
5.4.410.0000.03916.26
5.4.400.0110.03316.24
5.4.390.0050.02516.16
5.4.380.0050.03816.29
5.4.370.0170.03116.09
5.4.360.0080.02416.23
5.4.350.0030.04616.25
5.4.340.0050.03716.15
5.4.330.0000.00813.39
5.4.320.0050.04316.09
5.4.310.0110.03116.21
5.4.300.0040.03616.28
5.4.290.0070.04016.16
5.4.280.0060.04316.29
5.4.270.0060.04516.24
5.4.260.0090.03816.23
5.4.250.0090.02816.09
5.4.240.0080.03716.28
5.4.230.0050.03716.08
5.4.220.0070.03316.23
5.4.210.0070.03616.25
5.4.200.0020.04316.08
5.4.190.0070.04016.09
5.4.180.0110.03316.23
5.4.170.0020.03616.23
5.4.160.0040.03816.22
5.4.150.0050.03016.23
5.4.140.0100.03114.89
5.4.130.0070.03614.87
5.4.120.0030.02814.84
5.4.110.0040.04114.90
5.4.100.0050.03914.83
5.4.90.0030.03514.82
5.4.80.0070.03014.80
5.4.70.0060.03314.81
5.4.60.0050.02914.80
5.4.50.0050.03114.90
5.4.40.0050.02014.88
5.4.30.0060.02914.80
5.4.20.0070.02414.79
5.4.10.0090.03714.87
5.4.00.0030.02314.58
5.3.290.0020.02813.99
5.3.280.0070.02413.98
5.3.270.0080.04013.96
5.3.260.0000.03613.96
5.3.250.0030.03313.96
5.3.240.0060.03313.94
5.3.230.0100.02513.95
5.3.220.0030.03713.98
5.3.210.0050.04013.92
5.3.200.0060.03813.95
5.3.190.0060.03313.91
5.3.180.0050.04213.98
5.3.170.0070.03413.92
5.3.160.0030.04113.94
5.3.150.0070.04013.95
5.3.140.0050.02513.87
5.3.130.0030.02313.94
5.3.120.0020.04513.97
5.3.110.0030.04314.01
5.3.100.0090.02513.61
5.3.90.0010.02813.76
5.3.80.0070.03713.68
5.3.70.0020.04313.70
5.3.60.0070.03813.61
5.3.50.0030.03313.65
5.3.40.0050.04113.63
5.3.30.0030.04013.61
5.3.20.0050.03713.59
5.3.10.0020.04313.53
5.3.00.0030.04313.47
5.2.170.0030.03711.13
5.2.160.0030.06011.11
5.2.150.0070.05711.08
5.2.140.0070.07011.29
5.2.130.0130.05311.00
5.2.120.0100.06310.95
5.2.110.0030.06311.03
5.2.100.0130.05311.06
5.2.90.0070.05711.03
5.2.80.0100.03711.06
5.2.70.0030.06011.18
5.2.60.0030.05010.94
5.2.50.0030.05311.16
5.2.40.0000.05310.80
5.2.30.0000.03710.91
5.2.20.0070.06010.95
5.2.10.0100.03010.71
5.2.00.0070.03710.71
5.1.60.0030.04710.00
5.1.50.0030.0479.99
5.1.40.0030.0379.96
5.1.30.0030.06010.38
5.1.20.0030.04710.39
5.1.10.0030.05010.06
5.1.00.0100.03010.07
5.0.50.0130.0378.61
5.0.40.0030.0438.45
5.0.30.0070.0608.29
5.0.20.0030.0238.19
5.0.10.0030.0438.32
5.0.00.0100.0578.29
4.4.90.0070.0277.91
4.4.80.0030.0307.91
4.4.70.0030.0277.91
4.4.60.0030.0337.91
4.4.50.0000.0277.91
4.4.40.0030.0577.91
4.4.30.0030.0207.91
4.4.20.0000.0407.91
4.4.10.0000.0407.91
4.4.00.0000.0307.91
4.3.110.0070.0337.91
4.3.100.0030.0207.91
4.3.90.0000.0277.91
4.3.80.0000.0577.91
4.3.70.0000.0277.91
4.3.60.0030.0337.91
4.3.50.0100.0207.91
4.3.40.0030.0537.91
4.3.30.0000.0207.91
4.3.20.0000.0377.91
4.3.10.0000.0407.91
4.3.00.0000.0377.91

preferences:
40.92 ms | 401 KiB | 5 Q