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@ 2013-07-29T10:02:18Z

<?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));

Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6: Fatal error: Array and string offset access syntax with curly braces is no longer supported in /in/YZKW1 on line 36
Process exited with code 255.
Output for 7.4.0 - 7.4.33: Deprecated: Array and string offset access syntax with curly braces is deprecated in /in/YZKW1 on line 36 Deprecated: Array and string offset access syntax with curly braces is deprecated in /in/YZKW1 on line 41 Deprecated: Array and string offset access syntax with curly braces is deprecated in /in/YZKW1 on line 41 !!!bool(false)
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.37, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.10, 7.2.0 - 7.2.33, 7.3.12 - 7.3.33: !!!bool(false)

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