3v4l.org

run code in 300+ PHP versions simultaneously
<?php // Everything you enter here will be executed by our servers. Try it! function isCamelCaps( $string, $classFormat=false, $public=true, $strict=true ) { // Check the first character first. if ($classFormat === false) { if ($public === false) { $legalFirstChar = '[_][a-z]'; } else { $legalFirstChar = '[a-z]'; } } else { $legalFirstChar = '[A-Z]'; } echo '!!!'; if (preg_match("|^$legalFirstChar|", $string) === 0) { return false; } // Check that the name only contains legal characters. $legalChars = 'a-zA-Z0-9'; if (preg_match("|[^$legalChars]|", substr($string, 1)) > 0) { return false; } if ($strict === true) { // Check that there are not two capital letters next to each other. $length = strlen($string); $lastCharWasCaps = $classFormat; for ($i = 1; $i < $length; $i++) { $ascii = ord($string{$i}); if ($ascii >= 48 && $ascii <= 57) { // The character is a number, so it cant be a capital. $isCaps = false; } else { if (strtoupper($string{$i}) === $string{$i}) { $isCaps = true; } else { $isCaps = false; } } if ($isCaps === true && $lastCharWasCaps === true) { return false; } $lastCharWasCaps = $isCaps; } }//end if return true; } var_dump(isCamelCaps('AddStep2NewBookAdd', false, true, true));

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)
8.3.60.0170.00316.75
8.3.50.0140.00621.94
8.3.40.0070.00718.81
8.3.30.0070.00718.81
8.3.20.0040.00420.29
8.3.10.0000.00723.61
8.3.00.0030.01022.43
8.2.180.0070.00716.74
8.2.170.0110.00322.96
8.2.160.0040.01122.25
8.2.150.0030.00524.18
8.2.140.0040.00424.66
8.2.130.0040.00426.16
8.2.120.0080.00022.11
8.2.110.0030.00622.08
8.2.100.0080.00317.57
8.2.90.0030.00519.09
8.2.80.0050.00317.97
8.2.70.0040.00417.50
8.2.60.0100.00017.90
8.2.50.0040.00418.07
8.2.40.0000.00918.09
8.2.30.0080.00017.84
8.2.20.0070.00017.58
8.2.10.0000.00819.40
8.2.00.0050.00317.52
8.1.280.0070.01125.92
8.1.270.0040.00423.76
8.1.260.0050.00326.35
8.1.250.0000.00728.09
8.1.240.0030.00624.02
8.1.230.0070.00317.51
8.1.220.0000.00817.74
8.1.210.0060.00318.77
8.1.200.0060.00317.23
8.1.190.0040.00417.41
8.1.180.0080.00018.10
8.1.170.0060.00318.59
8.1.160.0000.00721.96
8.1.150.0000.00718.50
8.1.140.0040.00417.27
8.1.130.0030.00317.32
8.1.120.0030.00317.43
8.1.110.0040.00417.34
8.1.100.0000.00817.38
8.1.90.0070.00317.33
8.1.80.0000.00717.34
8.1.70.0050.00317.21
8.1.60.0070.00017.44
8.1.50.0040.00417.33
8.1.40.0070.00017.40
8.1.30.0000.00817.46
8.1.20.0050.00317.47
8.1.10.0040.00417.41
8.1.00.0000.00717.29
8.0.300.0000.00718.77
8.0.290.0080.00016.63
8.0.280.0070.00018.25
8.0.270.0040.00417.07
8.0.260.0060.00016.75
8.0.250.0030.00316.90
8.0.240.0000.00716.91
8.0.230.0000.00716.78
8.0.220.0000.00716.72
8.0.210.0050.00316.81
8.0.200.0000.00716.87
8.0.190.0030.00316.95
8.0.180.0040.00416.80
8.0.170.0080.00016.82
8.0.160.0080.00016.86
8.0.150.0040.00416.73
8.0.140.0070.00016.85
8.0.130.0000.00613.21
8.0.120.0030.00516.78
8.0.110.0000.00716.74
8.0.100.0000.00716.75
8.0.90.0000.00716.86
8.0.80.0060.01016.77
8.0.70.0050.00316.73
8.0.60.0000.00716.80
8.0.50.0050.00216.90
8.0.30.0110.00816.80
8.0.20.0130.00517.40
8.0.10.0070.00016.84
8.0.00.0090.01116.71
7.4.330.0000.00515.00
7.4.320.0030.00316.72
7.4.300.0060.00016.85
7.4.290.0040.00416.85
7.4.280.0000.00716.71
7.4.270.0060.00316.85
7.4.260.0030.00316.71
7.4.250.0000.00816.61
7.4.240.0040.00316.70
7.4.230.0030.00516.80
7.4.220.0120.00416.84
7.4.210.0080.00916.80
7.4.200.0050.00216.57
7.4.190.0000.00817.00
7.4.160.0160.00616.96
7.4.150.0070.01017.40
7.4.140.0090.01217.86
7.4.130.0110.00616.80
7.4.120.0050.01416.79
7.4.110.0040.01316.85
7.4.100.0120.00616.79
7.4.90.0110.00616.62
7.4.80.0110.00819.39
7.4.70.0130.00316.55
7.4.60.0100.00716.81
7.4.50.0080.00016.69
7.4.40.0070.01022.77
7.4.30.0100.00716.68
7.4.00.0090.00615.14
7.3.330.0070.00013.32
7.3.320.0030.00313.46
7.3.310.0030.00316.55
7.3.300.0040.00416.32
7.3.290.0100.00616.53
7.3.280.0070.01216.49
7.3.270.0100.01317.40
7.3.260.0070.01116.68
7.3.250.0090.01116.76
7.3.240.0130.00316.67
7.3.230.0090.00916.43
7.3.210.0100.00716.76
7.3.200.0110.01119.39
7.3.190.0040.01516.75
7.3.180.0030.01216.65
7.3.170.0100.00716.76
7.3.160.0080.01216.40
7.3.120.0080.00415.25
7.2.330.0090.00916.77
7.2.320.0140.00716.77
7.2.310.0090.00916.63
7.2.300.0040.01216.94
7.2.290.0090.00916.71
7.2.00.0000.01819.71
7.1.100.0040.00718.47
7.1.70.0000.00717.35
7.1.60.0110.01419.29
7.1.50.0100.01617.12
7.1.00.0030.07722.34
7.0.200.0060.00617.00
7.0.140.0100.06721.97
7.0.80.0400.04019.98
7.0.70.0170.04020.02
7.0.60.0370.04019.82
7.0.50.0200.04320.35
7.0.40.0030.04320.12
7.0.30.0100.03720.05
7.0.20.0030.08320.08
7.0.10.0070.05020.17
7.0.00.0100.03720.14
5.6.280.0070.07020.80
5.6.230.0030.03720.68
5.6.220.0000.04320.75
5.6.210.0100.04020.58
5.6.200.0030.04321.04
5.6.190.0130.04020.98
5.6.180.0170.06321.12
5.6.170.0030.04321.12
5.6.160.0000.04321.05
5.6.150.0030.04021.14
5.6.140.0030.04021.06
5.6.130.0000.04721.11
5.6.120.0200.06721.02
5.6.110.0130.07321.14
5.6.100.0170.04321.10
5.6.90.0170.05721.00
5.6.80.0130.06320.36
5.6.70.0130.07020.50
5.6.60.0200.04020.40
5.6.50.0100.07020.44
5.6.40.0130.04720.43
5.6.30.0170.07320.47
5.6.20.0100.08020.44
5.6.10.0070.07720.46
5.6.00.0130.07320.41
5.5.370.0070.03320.46
5.5.360.0100.03320.36
5.5.350.0030.04020.43
5.5.340.0030.04320.85
5.5.330.0000.05720.92
5.5.320.0070.03320.93
5.5.310.0130.03320.88
5.5.300.0070.05320.83
5.5.290.0070.09020.94
5.5.280.0130.08320.77
5.5.270.0030.08020.76
5.5.260.0070.08320.84
5.5.250.0070.07320.72
5.5.240.0070.07320.04
5.5.230.0100.08320.27
5.5.220.0030.08320.24
5.5.210.0030.04720.03
5.5.200.0070.08020.24
5.5.190.0100.06720.13
5.5.180.0030.08320.29
5.5.160.0000.08320.24
5.5.150.0070.04720.25
5.5.140.0100.07320.25
5.5.130.0170.07020.25
5.5.120.0000.04720.14
5.5.110.0230.06320.24
5.5.100.0070.08020.13
5.5.90.0200.06020.14
5.5.80.0200.07020.16
5.5.70.0030.08720.07
5.5.60.0070.07720.11
5.5.50.0100.04720.01
5.5.40.0030.08020.07
5.5.30.0070.08020.06
5.5.20.0100.07320.06
5.5.10.0100.07720.10
5.5.00.0030.05719.96
5.4.450.0000.05019.49
5.4.440.0130.06719.42
5.4.430.0070.05319.53
5.4.420.0070.08319.38
5.4.410.0070.07319.14
5.4.400.0030.04019.08
5.4.390.0030.04718.90
5.4.380.0070.07319.14
5.4.370.0070.07318.84
5.4.360.0100.04018.86
5.4.350.0000.08018.88
5.4.340.0070.07719.21
5.4.320.0070.06019.09
5.4.310.0030.08319.10
5.4.300.0130.05018.87
5.4.290.0070.05019.04
5.4.280.0170.06319.15
5.4.270.0030.05019.12
5.4.260.0170.05719.15
5.4.250.0100.06719.13
5.4.240.0130.06318.94
5.4.230.0030.07019.21
5.4.220.0130.07019.11
5.4.210.0030.08019.04
5.4.200.0170.06318.85
5.4.190.0000.08319.08
5.4.180.0130.06319.13
5.4.170.0000.09018.89
5.4.160.0100.07719.08
5.4.150.0030.08019.12
5.4.140.0070.07316.43
5.4.130.0030.07316.41
5.4.120.0170.06016.43
5.4.110.0130.03316.29
5.4.100.0000.04716.34
5.4.90.0070.07716.51
5.4.80.0100.05716.40
5.4.70.0070.07316.37
5.4.60.0000.04716.41
5.4.50.0070.06016.45
5.4.40.0000.07716.57
5.4.30.0000.08316.40
5.4.20.0100.06716.44
5.4.10.0100.07016.45
5.4.00.0200.06015.69
5.3.290.0070.05714.79
5.3.280.0130.05014.63
5.3.270.0070.07314.55
5.3.260.0130.07014.67
5.3.250.0200.03014.58
5.3.240.0000.08714.65
5.3.230.0070.07014.56
5.3.220.0170.07014.68
5.3.210.0100.07714.55
5.3.200.0070.08014.69
5.3.190.0030.07314.50
5.3.180.0030.07314.67
5.3.170.0030.08014.66
5.3.160.0070.04014.54
5.3.150.0070.07314.61
5.3.140.0070.06314.71
5.3.130.0070.08014.53
5.3.120.0130.04714.63
5.3.110.0070.03714.48
5.3.100.0170.06714.14
5.3.90.0130.06014.16
5.3.80.0070.06714.08
5.3.70.0100.07314.02
5.3.60.0170.06313.94
5.3.50.0030.07313.95
5.3.40.0130.03313.98
5.3.30.0070.07713.98
5.3.20.0070.04013.68
5.3.10.0030.07013.60
5.3.00.0000.06013.75
5.2.170.0030.06711.70
5.2.160.0070.05711.70
5.2.150.0030.03711.70
5.2.140.0100.05311.70
5.2.130.0070.03311.70
5.2.120.0070.05011.70
5.2.110.0030.06711.70
5.2.100.0070.02711.70
5.2.90.0000.04711.70
5.2.80.0030.03311.70
5.2.70.0030.03711.70
5.2.60.0100.05711.70
5.2.50.0100.06011.70
5.2.40.0130.05311.70
5.2.30.0070.05711.70
5.2.20.0070.06011.70
5.2.10.0100.05711.70
5.2.00.0070.05711.70
5.1.60.0070.05311.70
5.1.50.0070.05011.70
5.1.40.0070.03711.70
5.1.30.0170.04311.70
5.1.20.0070.05311.70
5.1.10.0030.04711.70
5.1.00.0070.05711.70
5.0.50.0030.05011.70
5.0.40.0030.04311.70
5.0.30.0030.06011.70
5.0.20.0070.04011.70
5.0.10.0000.03711.70
5.0.00.0000.03711.70
4.4.90.0000.03011.70
4.4.80.0030.02311.70
4.4.70.0000.02711.70
4.4.60.0000.04011.70
4.4.50.0000.03711.70
4.4.40.0000.04711.70
4.4.30.0000.03711.70
4.4.20.0000.02311.70
4.4.10.0070.01711.70
4.4.00.0030.05311.70
4.3.110.0000.03711.70
4.3.100.0000.03011.70
4.3.90.0030.03711.70
4.3.80.0000.05011.70
4.3.70.0070.03011.70
4.3.60.0000.03011.70
4.3.50.0000.03711.70
4.3.40.0000.05011.70
4.3.30.0000.03311.70
4.3.20.0070.03311.70
4.3.10.0000.03311.70
4.3.00.0000.02711.70

preferences:
42.69 ms | 401 KiB | 5 Q