// Replace non-alphanumeric characters with our delimiter $str = preg_replace('/[^\p{L}\p{Nd}]+/u', $options['delimiter'], $str); // Remove duplicate delimiters $str = preg_replace('/(' . preg_quote($options['d
php// Define a string containing alphanumeric characters, including special characters like comma and period.$str1="$12,334.00A";// Use preg_replace function to remove all characters except digits (0-9), comma (,), and period (.).// The regular expression pattern "/[^0-9,.]/" match...
echo preg_replace('/[^A-Za-z0-9_]/', '', 'D"usseldorfer H"auptstrasse') Dusseldorfer Hauptstrasse PS An alternative is to use preg_replace('/\W/', '', $t) for keeping all alpha numeric characters including underscores.highlighter...
I've noticed websites are now starting to require passwords of a certain length that MUST contain at least 1 non-alphanumeric character. This in itself makes dictionary attacks kind of useless. My web site requires that as well. It uses md5, and appends a site code into the md5 as well...
Returns a string in which all non-alphanumeric characters except -_.~ have been replaced with a percent (%) sign followed by two hex digits. This is the encoding described in » RFC 3986 for protecting literal characters from being interpreted as special URL delimiters, and for protecting ...
a. The conversion names follow a standard naming scheme: The official name of the source encoding with all non-alphanumeric characters replaced by underscores followed by _to_ followed by the equally processed destination encoding name. Therefore the names might deviate from the customary encoding ...
preg_replace( string|array$pattern, string|array$replacement, string|array$subject, int$limit= -1, int&$count=null ):string|array|null 搜索subject中匹配pattern的部分,以replacement进行替换。 匹配一个精确的字符串,而不是一个模式, 可以使用str_replace()或str_ireplace()代替这个函数。
To convert all non-ASCII characters into entities (to produce pure 7-bit HTML output), I was using:<?phpecho mb_convert_encoding( htmlspecialchars( $text, ENT_QUOTES, 'UTF-8' ), 'HTML-ENTITIES', 'UTF-8' );?>I can get the identical result with:<?phpecho mb_encode_numericentity( ...
This includes replacing non-ASCII characters with their closest ASCII equivalents, removing remaining non-ASCII and non-alphanumeric characters, and replacing whitespace with $replacement. The replacement defaults to a single dash, and the string is also converted to lowercase. The language of the ...
Encoding is an important job in various scenarios. URL encoding helps to convert the URL by adding standard entities into it. For example, if an URL contains non-alphanumeric characters then the encoding will replace those characters with the encoding entities. ...