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<?php |
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/****************************************************************************** |
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* Wikipedia Account Creation Assistance tool * |
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* * |
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* All code in this file is released into the public domain by the ACC * |
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* Development Team. Please see team.json for a list of contributors. * |
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******************************************************************************/ |
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namespace Waca; |
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class StringFunctions |
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{ |
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/** |
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* Formats a string to be used as a username. |
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* |
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* @param $username |
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* |
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* @return string |
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*/ |
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public function formatAsUsername($username) |
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{ |
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// trim whitespace from the ends |
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$uname = mb_ereg_replace("^[ \t]+|[ \t]+$", "", $username); |
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// convert first char to uppercase |
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$uname = $this->ucfirst($uname); |
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// replace spaces with underscores |
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$uname = mb_ereg_replace("[ ]+", "_", $uname); |
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// trim underscores from the end |
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$uname = mb_ereg_replace("[_]+$", "", $uname); |
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return $uname; |
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} |
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/** |
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* Formats a string to be used as an email (specifically strips whitespace |
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* from the beginning/end of the Email, as well as immediately before/after |
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* the @ in the Email). |
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* |
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* @param $email |
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* |
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* @return string |
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*/ |
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public static function formatAsEmail($email) |
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{ |
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// trim whitespace from the ends |
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$newemail = mb_ereg_replace("^[ \t]+|[ \t]+$", "", $email); |
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// trim whitespace from around the email address |
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$newemail = mb_ereg_replace("[ \t]+@", "@", $newemail); |
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$newemail = mb_ereg_replace("@[ \t]+", "@", $newemail); |
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return $newemail; |
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} |
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/** |
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* Returns true if a string is a multibyte string |
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* |
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* @param string $string |
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* |
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* @return bool |
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*/ |
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public function isMultibyte($string) |
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{ |
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return strlen($string) !== mb_strlen($string); |
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} |
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/** |
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* Make a string's first character uppercase |
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* |
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* @param string $string |
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* |
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* @return string |
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*/ |
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public function ucfirst($string) |
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{ |
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if (ord($string) < 128) { |
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return ucfirst($string); |
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} |
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else { |
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return mb_strtoupper(mb_substr($string, 0, 1)) . mb_substr($string, 1); |
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} |
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} |
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} |
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PHP provides two ways to mark string literals. Either with single quotes
'literal'or with double quotes"literal". The difference between these is that string literals in double quotes may contain variables with are evaluated at run-time as well as escape sequences.String literals in single quotes on the other hand are evaluated very literally and the only two characters that needs escaping in the literal are the single quote itself (
\') and the backslash (\\). Every other character is displayed as is.Double quoted string literals may contain other variables or more complex escape sequences.
will print an indented:
Single is ValueIf your string literal does not contain variables or escape sequences, it should be defined using single quotes to make that fact clear.
For more information on PHP string literals and available escape sequences see the PHP core documentation.