3v4l.org

run code in 300+ PHP versions simultaneously
<?php $text = base64_encode(md5('')); $start = microtime(true); for ($i = 0; $i < 100; ++$i) { $result = []; $value = $text; do { $result[] = $value; $value = substr($value, 0, -1); } while ('' !== $value); } $end = microtime(true); echo $i/($end - $start), ' op/s', PHP_EOL; var_dump($result);

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)
7.4.00.0060.01315.16
7.3.120.0040.01514.96
7.3.110.0040.01614.77
7.3.100.0100.00714.91
7.3.90.0000.01514.87
7.3.80.0070.01014.80
7.3.70.0060.00914.82
7.3.60.0070.00714.86
7.3.50.0090.00614.83
7.3.40.0100.00314.79
7.3.30.0080.00814.95
7.3.20.0060.00316.75
7.3.10.0060.00916.64
7.3.00.0080.00316.56
7.2.250.0070.01015.16
7.2.240.0110.01114.83
7.2.230.0030.01315.08
7.2.220.0060.00915.13
7.2.210.0030.01215.04
7.2.200.0090.00315.00
7.2.190.0070.00714.78
7.2.180.0090.00614.90
7.2.170.0070.00715.13
7.2.160.0070.01014.90
7.2.150.0090.00916.92
7.2.140.0040.01116.79
7.2.130.0100.00316.95
7.2.120.0070.01017.04
7.2.110.0030.00617.03
7.2.100.0050.01217.07
7.2.90.0030.01416.96
7.2.80.0000.00916.87
7.2.70.0030.00916.62
7.2.60.0060.00316.71
7.2.50.0090.00617.04
7.2.40.0030.01317.01
7.2.30.0070.00716.78
7.2.20.0040.00816.93
7.2.10.0030.00616.78
7.2.00.0050.00918.05
7.1.330.0000.01415.96
7.1.320.0090.00615.97
7.1.310.0040.01215.76
7.1.300.0000.01715.87
7.1.290.0030.00915.80
7.1.280.0040.01115.97
7.1.270.0030.00515.92
7.1.260.0000.01015.80
7.1.250.0060.01015.94
7.1.70.0030.01017.19
7.1.60.0100.01619.82
7.1.50.0100.01017.15
7.1.00.0030.07722.36
7.0.200.0040.00416.68
7.0.140.0070.07322.07
7.0.100.0030.08720.07
7.0.90.0170.07719.95
7.0.80.0100.07719.91
7.0.70.0030.08319.94
7.0.60.0100.07720.00
7.0.50.0070.05320.35
7.0.40.0170.07020.13
7.0.30.0030.09019.95
7.0.20.0030.08320.18
7.0.10.0100.08020.12
7.0.00.0170.04720.08
5.6.280.0000.08020.92
5.6.250.0130.07320.49
5.6.240.0030.08320.60
5.6.230.0130.07320.52
5.6.220.0130.08020.67
5.6.210.0100.08020.48
5.6.200.0070.08321.02
5.6.190.0000.09021.02
5.6.180.0070.07721.00
5.6.170.0130.08021.13
5.6.160.0070.09021.03
5.6.150.0070.08321.02
5.6.140.0030.08321.16
5.6.130.0100.07720.90
5.6.120.0100.08720.98
5.6.110.0170.08021.02
5.6.100.0200.08021.05
5.6.90.0100.06020.98
5.6.80.0000.05020.51
5.6.70.0070.04720.37
5.6.60.0030.08320.41
5.6.50.0130.07020.46
5.6.40.0070.07720.41
5.6.30.0000.04720.43
5.6.20.0070.07320.28
5.6.10.0170.07020.43
5.6.00.0070.05720.51
5.5.380.0100.06320.41
5.5.370.0070.08720.45
5.5.360.0130.07320.37
5.5.350.0070.09020.41
5.5.340.0130.07020.93
5.5.330.0170.07020.86
5.5.320.0030.07720.77
5.5.310.0000.08320.88
5.5.300.0100.08020.64
5.5.290.0070.07720.73
5.5.280.0100.07720.63
5.5.270.0070.08320.87
5.5.260.0130.06720.63
5.5.250.0130.08020.54
5.5.240.0070.07720.31
5.5.230.0030.05020.30
5.5.220.0130.07720.20
5.5.210.0030.08320.10
5.5.200.0000.08720.26
5.5.190.0100.04020.27
5.5.180.0070.07720.22
5.5.160.0070.08020.08
5.5.150.0100.07720.18
5.5.140.0200.03719.96
5.5.130.0070.07020.13
5.5.120.0030.08720.10
5.5.110.0170.06320.10
5.5.100.0000.09020.04
5.5.90.0100.07320.07
5.5.80.0100.07320.14
5.5.70.0070.07320.08
5.5.60.0030.05020.13
5.5.50.0030.08020.05
5.5.40.0070.07320.13
5.5.30.0100.07720.00
5.5.20.0070.05320.12
5.5.10.0100.07720.01
5.5.00.0170.07720.06
5.4.450.0000.08319.58
5.4.440.0070.08019.36
5.4.430.0130.07319.30
5.4.420.0070.08019.43
5.4.410.0170.07719.16
5.4.400.0100.04718.98
5.4.390.0170.06718.94
5.4.380.0130.07019.12
5.4.370.0000.07318.90
5.4.360.0100.05719.11
5.4.350.0100.07019.14
5.4.340.0030.05318.98
5.4.320.0030.08018.83
5.4.310.0200.06718.94
5.4.300.0100.04318.78
5.4.290.0030.08318.80
5.4.280.0030.08019.08
5.4.270.0130.07719.11
5.4.260.0070.05719.06
5.4.250.0100.07019.12
5.4.240.0130.06718.79
5.4.230.0070.07319.02
5.4.220.0030.08318.96
5.4.210.0170.07318.93
5.4.200.0100.07019.02
5.4.190.0030.08318.80
5.4.180.0100.07019.13
5.4.170.0070.07718.93
5.4.160.0030.07319.10
5.4.150.0070.08019.10
5.4.140.0100.07016.28
5.4.130.0130.06316.36
5.4.120.0170.06316.26
5.4.110.0070.07016.30
5.4.100.0070.07716.36
5.4.90.0000.08016.36
5.4.80.0030.07316.21
5.4.70.0070.07316.29
5.4.60.0070.07316.24
5.4.50.0000.07316.27
5.4.40.0100.07316.25
5.4.30.0100.07316.35
5.4.20.0070.07716.24
5.4.10.0130.06016.30
5.4.00.0130.06715.72
5.3.290.0030.04714.58
5.3.280.0070.07314.59
5.3.270.0100.05714.46
5.3.260.0070.07014.47
5.3.250.0130.07014.55
5.3.240.0070.07714.59
5.3.230.0130.06014.42
5.3.220.0070.06714.57
5.3.210.0100.07314.55
5.3.200.0130.06714.55
5.3.190.0070.05714.55
5.3.180.0130.06714.42
5.3.170.0070.04314.57
5.3.160.0070.07714.43
5.3.150.0100.07014.50
5.3.140.0070.06714.42
5.3.130.0030.08014.37
5.3.120.0030.08014.41
5.3.110.0030.07714.55
5.3.100.0100.06013.95
5.3.90.0100.07313.88
5.3.80.0070.07714.01
5.3.70.0030.07713.93
5.3.60.0070.07013.87
5.3.50.0070.07313.97
5.3.40.0070.06013.80
5.3.30.0130.05713.90
5.3.20.0100.04313.55
5.3.10.0030.03713.59
5.3.00.0030.04013.63
5.2.170.0030.06711.18
5.2.160.0070.06011.21
5.2.150.0070.05711.00
5.2.140.0130.03011.00
5.2.130.0100.03311.07
5.2.120.0000.03311.12
5.2.110.0000.03311.16
5.2.100.0030.05711.02
5.2.90.0170.02011.14
5.2.80.0070.02711.04
5.2.70.0100.02310.94
5.2.60.0070.03011.00
5.2.50.0000.03011.05
5.2.40.0030.03010.82
5.2.30.0030.02710.97
5.2.20.0030.02310.82
5.2.10.0100.05010.91
5.2.00.0000.05310.62
5.1.60.0000.02310.02
5.1.50.0000.0409.98
5.1.40.0000.06010.02
5.1.30.0000.05310.29
5.1.20.0070.05710.39
5.1.10.0000.03710.06
5.1.00.0030.02310.12
5.0.50.0000.0439.06
5.0.40.0070.0179.06
5.0.30.0000.0309.06
5.0.20.0000.0209.06
5.0.10.0000.0239.06
5.0.00.0000.0309.06
4.4.90.0000.0379.06
4.4.80.0000.0179.06
4.4.70.0000.0179.06
4.4.60.0070.0279.06
4.4.50.0000.0409.06
4.4.40.0000.0479.06
4.4.30.0030.0379.06
4.4.20.0000.0179.06
4.4.10.0000.0179.06
4.4.00.0030.0209.06
4.3.110.0000.0139.06
4.3.100.0000.0179.06
4.3.90.0070.0209.06
4.3.80.0000.0309.06
4.3.70.0000.0179.06
4.3.60.0000.0139.06
4.3.50.0000.0279.06
4.3.40.0030.0239.06
4.3.30.0070.0179.06
4.3.20.0030.0139.06
4.3.10.0000.0139.06
4.3.00.0000.0209.06

preferences:
38.26 ms | 400 KiB | 5 Q