3v4l.org

run code in 300+ PHP versions simultaneously
<?php for($i = 0; $i <= 10; $i += 1) { //loop to calculate parameters for substr $randomlettersnumbers = str_shuffle('abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'); //creates a shuffled alphanumeric string $randomlettersnumbers2 = str_shuffle('0123456789!@#$%^&*()_+{}:|\<>?'); //creates a shuffled alphanumeric string $randcomb = $randomlettersnumbers.$randomlettersnumbers2; //$param1 = ($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)."<BR>"; }

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)
7.1.100.0060.00618.11
7.1.70.0040.00417.05
7.1.60.0090.01519.29
7.1.50.0070.01516.97
7.1.00.0000.08022.36
7.0.200.0000.00916.52
7.0.140.0030.06722.07
7.0.70.0100.06021.61
7.0.60.0030.06321.86
7.0.50.0130.08022.14
7.0.40.0030.08320.14
7.0.30.0070.08320.17
7.0.20.0070.08720.13
7.0.10.0030.08720.18
7.0.00.0030.08320.04
5.6.220.0030.08020.61
5.6.210.0070.05320.61
5.6.200.0100.08320.95
5.6.190.0070.08021.05
5.6.180.0030.09021.00
5.6.170.0070.08021.02
5.6.160.0030.04321.01
5.6.150.0030.09021.00
5.6.140.0070.07321.04
5.6.130.0030.08021.13
5.6.120.0100.07720.91
5.6.110.0100.08021.05
5.6.100.0000.07720.91
5.6.90.0070.08321.00
5.6.80.0070.07720.48
5.6.70.0070.07720.39
5.6.60.0130.06320.30
5.6.50.0000.04320.47
5.6.40.0100.07020.29
5.6.30.0030.08020.29
5.6.20.0070.08020.28
5.6.10.0070.06320.26
5.6.00.0000.08020.42
5.5.360.0000.08720.39
5.5.350.0030.08320.34
5.5.340.0030.08720.82
5.5.330.0030.05320.90
5.5.320.0000.07320.88
5.5.310.0030.08020.90
5.5.300.0070.08320.72
5.5.290.0030.08020.77
5.5.280.0030.06020.92
5.5.270.0100.07720.61
5.5.260.0070.07720.83
5.5.250.0030.07720.45
5.5.240.0070.08020.31
5.5.230.0000.05720.10
5.5.220.0030.07020.26
5.5.210.0070.07320.20
5.5.200.0030.08320.23
5.5.190.0070.08320.08
5.5.180.0000.08320.17
5.5.160.0100.08320.14
5.5.150.0030.05320.27
5.5.140.0070.08320.11
5.5.130.0130.05320.14
5.5.120.0000.08720.14
5.5.110.0030.07720.07
5.5.100.0070.07320.01
5.5.90.0070.07320.14
5.5.80.0030.07020.09
5.5.70.0000.07320.05
5.5.60.0000.08020.04
5.5.50.0030.06020.02
5.5.40.0100.08019.98
5.5.30.0000.08320.13
5.5.20.0070.08320.08
5.5.10.0070.04320.00
5.5.00.0030.07020.06
5.4.450.0100.07719.14
5.4.440.0000.07019.30
5.4.430.0000.08719.34
5.4.420.0070.07319.39
5.4.410.0030.07319.42
5.4.400.0070.08018.97
5.4.390.0000.07019.13
5.4.380.0030.06718.81
5.4.370.0000.08318.78
5.4.360.0070.08019.14
5.4.350.0070.07718.81
5.4.340.0030.06019.10
5.4.320.0070.08018.98
5.4.310.0030.08319.13
5.4.300.0100.06319.12
5.4.290.0070.07319.11
5.4.280.0000.08719.11
5.4.270.0070.07718.98
5.4.260.0200.06318.81
5.4.250.0030.05318.97
5.4.240.0070.04319.22
5.4.230.0030.07319.11
5.4.220.0070.05019.22
5.4.210.0030.04718.89
5.4.200.0070.07019.02
5.4.190.0000.08318.97
5.4.180.0000.07719.03
5.4.170.0070.07718.77
5.4.160.0070.07719.07
5.4.150.0100.07318.94
5.4.140.0100.05316.36
5.4.130.0000.05016.36
5.4.120.0070.07316.29
5.4.110.0000.05316.22
5.4.100.0030.06316.40
5.4.90.0030.07316.30
5.4.80.0000.05016.22
5.4.70.0000.07316.21
5.4.60.0070.04316.35
5.4.50.0030.07716.20
5.4.40.0030.05716.23
5.4.30.0070.07316.35
5.4.20.0030.06716.28
5.4.10.0070.04716.43
5.4.00.0000.07015.84
5.3.290.0070.08014.52
5.3.280.0070.07314.55
5.3.270.0070.08014.61
5.3.260.0030.04314.47
5.3.250.0030.08014.44
5.3.240.0030.06714.44
5.3.230.0030.07714.58
5.3.220.0030.07014.47
5.3.210.0070.07714.56
5.3.200.0070.05014.56
5.3.190.0000.06314.40
5.3.180.0000.06714.56
5.3.170.0100.06314.55
5.3.160.0000.05714.47
5.3.150.0030.07014.43
5.3.140.0000.07314.54
5.3.130.0030.08014.55
5.3.120.0000.08714.48
5.3.110.0000.07714.51
5.3.100.0000.08014.03
5.3.90.0000.07313.84
5.3.80.0030.07313.97
5.3.70.0030.07013.96
5.3.60.0270.05713.86
5.3.50.0000.07713.85
5.3.40.0030.07013.90
5.3.30.0030.07713.84
5.3.20.0070.07013.54
5.3.10.0030.07013.52
5.3.00.0030.07713.57
5.2.170.0070.06012.34
5.2.160.0000.04712.34
5.2.150.0070.06312.34
5.2.140.0030.06312.34
5.2.130.0030.06312.34
5.2.120.0030.06012.34
5.2.110.0030.06012.34
5.2.100.0070.05012.34
5.2.90.0030.06312.34
5.2.80.0030.06012.34
5.2.70.0070.05712.34
5.2.60.0000.05312.34
5.2.50.0030.04712.34
5.2.40.0030.04712.34
5.2.30.0000.06012.34
5.2.20.0000.03012.34
5.2.10.0030.03012.34
5.2.00.0030.03312.34
5.1.60.0000.02312.34
5.1.50.0030.02312.34
5.1.40.0000.03312.34
5.1.30.0000.02712.34
5.1.20.0100.04012.34
5.1.10.0030.03012.34
5.1.00.0030.02312.34
5.0.50.0000.02012.34
5.0.40.0000.02012.34
5.0.30.0030.06712.34
5.0.20.0030.02012.34
5.0.10.0070.02712.34
5.0.00.0030.06012.34
4.4.90.0030.03312.34
4.4.80.0030.01712.34
4.4.70.0000.02712.34
4.4.60.0030.01312.34
4.4.50.0000.01712.34
4.4.40.0000.02312.34
4.4.30.0000.01712.34
4.4.20.0030.01312.34
4.4.10.0000.01712.34
4.4.00.0000.02312.34
4.3.110.0030.02712.34
4.3.100.0070.02312.34
4.3.90.0030.02712.34
4.3.80.0000.04012.34
4.3.70.0030.01712.34
4.3.60.0000.03712.34
4.3.50.0000.03312.34
4.3.40.0000.02312.34
4.3.30.0000.03712.34
4.3.20.0030.02012.34
4.3.10.0000.01712.34
4.3.00.0000.01712.34

preferences:
34.1 ms | 400 KiB | 5 Q