preg_replace() PHPpreg_replace()Function ❮ PHP RegExp Reference Example Use a case-insensitive regular expression to replace Microsoft with W3Schools in a string: <?php $str ='Visit Microsoft!'; $pattern ='/microsoft/i'; echopreg_replace($pattern,'W3Schools', $str);...
They can also stay in the php loop by opting to receive notifications whenever someone post';$pattern=array('/php/i','/javascript/','/mysql/');classReplace{staticpublicfunctiontxt($replace){show($replace);if($replace[0]=='php'){return''.$replace[0].''; }return''.$replace[0].'';...
1.ereg_replace()和eregi_replace() #函数原型:stringereg_replace(string$pattern,string$replacement,string$string)stringeregi_replace(string$pattern,string$replacement,string$string) ereg_replace()在$string中搜索模式字符串$pattern,并将所匹配结果替换 为$replacement。当$pattern中包含模式单元(或子模式)时,$...
preg_replace()Returns a string where matches of a pattern (or an array of patterns) are replaced with a substring (or an array of substrings) in a given string preg_replace_callback()Given an expression and a callback, returns a string where all matches of the expression are replaced wi...
functionget_tag($attr,$value,$xml,$tag=null){if(is_null($tag))$tag='\w+';else$tag=preg_quote($tag);$attr=preg_quote($attr);$value=preg_quote($value);$tag_regex="/<(".$tag.")[^>]*$attr\s*=\s*"."(['\"])$value\\2[^>]*>(.*?)<\/\\1>/"preg_match_all($tag...
$regex = "/([a-zA-Z]+) (\d+)/"; $new_string = preg_replace($regex, "$2 of $1", "June 24"); // The string returned is either the same input string if the // regex does not match, or the transformed string. // This prints "24 of June" echo $new_string; Links For...
<?php function validateSpecialCharacters($input) { // 正则表达式匹配特殊字符 $pattern = '/[!@#$%^&*(),.?":{}|<>]/'; if (preg_match($pattern, $input)) { return "包含特殊字符"; } else { return "不包含特殊字符"; } } $input = "Hello! World"; echo validateSpecialCharacters($...
include php query-string regex <?php // 过滤QUERY_STRING $query_string = filter_input(INPUT_SERVER, 'QUERY_STRING', FILTER_SANITIZE_STRING); // 使用正则表达式过滤QUERY_STRING $query_string = preg_replace('/[^a-zA-Z0-9_\-\.\=\&\?\/]/', '', $query_string); // 输出过滤后的...
$text = preg_replace("/.+/i",".", $text); 1. 匹配一个XML或者HTML标签 这个简单的函数有两个参数:***个是你要匹配的标签,第二个是包含XML或HTML的变量,再强调下,这个真的很强大 复制 function get_tag( $tag, $xml ) {$tag = preg_quote($tag);preg_match_all('{<'.$tag.'[^>]*>(...
笔者平时开发习惯使用phpstorm这款IDE,因此这里教大家使用此IDE来删除非中文字符;按住键盘ctrl+r,替换文本内容,然后将正则表达式放入查找项当中,并且勾选regex,此时所有非汉字内容会被选中,如下图所示: 当笔者点击Replace all按钮时,变删除了所有非中文字符,此时我们的内容应该只有一行内容,如下图所示 ...