It is important to not forget a leading an trailing forward slash in the regex: echo preg_replace('/[^A-Za-z0-9_]/', '', 'D"usseldorfer H"auptstrasse') Dusseldorfer Hauptstrasse PS An alternative is to use preg_replace('/\W/', '', $t) for keeping all alpha numeric charact...
We define some PCRE regex functions. They all have a preg prefix. preg_split- splits a string by regex pattern preg_match- performs a regex match preg_replace- search and replace string by regex pattern preg_grep- returns array entries that match the regex pattern Next we will have an ex...
if(preg_match($regex, $str, $matches)){ var_dump($matches); } echo"\n"; preg_match中的$matches[0]将包含与整个模式匹配的字符串。 使用"#"定界符的代码如下.这个时候对"/"就不转义! $regex ='#^http://([\w.]+)/([\w]+)/([\w]+)\.html$#i'; $str ='http://www.youku.com/...
The fact that 'regex' functions are not binary safe have some very important security implications for people who are using ereg to validate their input data.Suppose I have an expression:<?php$pattern = '^[[:alnum:]]*$';?>This should match any number of alphanumeric characters, right?
$description = preg_replace("#^Sl.*#", "", $description); Breakdown: #beginning pattern delimiter. preg_xxx functions require you to wrap the pattern in a delimiter. You can use pretty much any non-alphanumeric character as the delimiter. Most people use / ~ or # ...
php regex 2个回答 5投票 根据PHP 正则表达式分隔符手册 分隔符可以是任何非字母数字、非反斜杠、非空格 性格。 因此本质上使用斜杠或 @或 #之间没有区别。但是请记住,选择的分隔符不得出现在正则表达式本身中,否则您将需要转义该字符。 提示: 由于PCRE 允许 any non-alphanumeric, non-backslash, non-...
eregi_replace() The eregi_replace() function operates exactly like ereg_replace(), except that the search for pattern in string is not case sensitive. 5 split() The split() function will divide a string into various elements, the boundaries of each element based on the occurrence of patt...
stringstrtr ( string $str, array $replace_pairs ) intstrcmp ( string $str1, string $str2 ) intstrcasecmp ( string $str1, string $str2 ) Note:PHP first transparently converts strings to their numeric equivalent;use "===" in the IF logic ...
If False it strips all non numeric characters. * @return {[type]} The stripped string. */ function charStripper(str, maxLength, regex) { str = str.replace(regex,''); str = str.substring(0, maxLength); return str; } //Application From Validation Processing //Mg. 07.2014 //Personlize...
regexReplace(string $pattern, string $replacement, string $options, string $delimiter): static↑ Replaces all occurrences of $pattern in $str by $replacement.EXAMPLE: s('fòô ')->regexReplace('f[òô]+\s', 'bàř'); // 'bàř' s('fò')->regexReplace('(ò)', '\1ô');...