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<?php |
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namespace EventEspresso\core\services\formatters; |
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use EventEspresso\core\exceptions\InvalidDataTypeException; |
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defined('EVENT_ESPRESSO_VERSION') || exit; |
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/** |
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* Class AsciiOnly |
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* Removes all non-ascii characters from the string |
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* |
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* @package Event Espresso |
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* @author Mike Nelson |
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* @since 4.9.31.p |
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*/ |
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class AsciiOnly extends FormatterBase |
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{ |
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/** |
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* Removes all non Ascii characters from string |
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* |
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* @param string|int|float $input anything easily cast into a string |
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* @return string |
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*/ |
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public function format($input) |
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{ |
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//in case an int or float etc was passed in |
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$input = (string)$input; |
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$input = $this->convertAscii($input); |
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return $input; |
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} |
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/** |
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* Taken from https://gist.github.com/jaywilliams/119517 |
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* @param $string |
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* @return string |
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*/ |
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protected function convertAscii($string) |
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{ |
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// Replace Single Curly Quotes |
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$search[] = chr(226).chr(128).chr(152); |
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$replace[] = "'"; |
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$search[] = chr(226).chr(128).chr(153); |
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$replace[] = "'"; |
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// Replace Smart Double Curly Quotes |
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$search[] = chr(226).chr(128).chr(156); |
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$replace[] = '"'; |
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$search[] = chr(226).chr(128).chr(157); |
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$replace[] = '"'; |
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// Replace En Dash |
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$search[] = chr(226).chr(128).chr(147); |
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$replace[] = '--'; |
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// Replace Em Dash |
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$search[] = chr(226).chr(128).chr(148); |
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$replace[] = '---'; |
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// Replace Bullet |
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$search[] = chr(226).chr(128).chr(162); |
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$replace[] = '*'; |
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// Replace Middle Dot |
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$search[] = chr(194).chr(183); |
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$replace[] = '*'; |
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// Replace Ellipsis with three consecutive dots |
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$search[] = chr(226).chr(128).chr(166); |
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$replace[] = '...'; |
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// Apply Replacements |
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$string = str_replace($search, $replace, $string); |
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// Remove any non-ASCII Characters |
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$string = preg_replace("/[^\x01-\x7F]/","", $string); |
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return $string; |
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} |
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} |
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// End of file EmojiRemoval.php |
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// Location: core\services\formatters/EmojiRemoval.php |
Adding an explicit array definition is generally preferable to implicit array definition as it guarantees a stable state of the code.
Let’s take a look at an example:
As you can see in this example, the array
$myArray
is initialized the first time when the foreach loop is entered. You can also see that the value of thebar
key is only written conditionally; thus, its value might result from a previous iteration.This might or might not be intended. To make your intention clear, your code more readible and to avoid accidental bugs, we recommend to add an explicit initialization $myArray = array() either outside or inside the foreach loop.