ereg-replace

I am looking to replace all characters in a string except letters, numbers, spaces and underscores. Could someone please provide a example? I normally use something like: $string = preg_replace("/[^ \w]+/", "", $string); That replaces all non-space and non-word characters with nothing. Raffael [^0-9a-zA-Z_\s] is what you want to replace. <?php $string = 'April 15, 2003'; $pattern = '/[^\w ]+/'; $replacement = ''; echo preg_replace($pattern, $replacement, $string); ?> 来源： https://stackoverflow.com/questions/6442174/replace-all-characters-except-letters-numbers-spaces-and-underscores

This question already has an answer here: How can I convert ereg expressions to preg in PHP? 4 answers I have a script that throws me errors because I run PHP 5.3.1 What Do I have to use in the example? $row[$j] = ereg_replace("\n", "\\n", $row[$j]); Deprecated: Function ereg_replace() is deprecated in.. Use preg_replace instead, just add delimiters . $row[$j] = preg_replace("#\n#", "\\n", $row[$j]); Use the preg_replace function instead. 来源： https://stackoverflow.com/questions/4226107/php-ereg-replace-deprecated

This question already has an answer here: How can I convert ereg expressions to preg in PHP? 4 answers Hi need to change the function ereg_replace("[\]", "", $theData) to preg_replace To port ereg_replace to preg_replace you need to put the regex between a pair of delimiter Also your regx is [\] is invalid to be used for preg_replace as the \ is escaping the closing char class ] The correct port is preg_replace('/[\\\]/','',$theData) Also since the char class has just one char there is no real need of char class you can just say: preg_replace('/\\\/','',$theData) Since you are replace just a