php regex preg-replace backreference capture-group 3个回答 6投票 开头和结尾的两个 | 可能不正确 - 并且都应该是正斜杠。 所有其他正斜杠都应该是反斜杠(并且需要转义)。 从PHP 4.04 开始, $n 是引用捕获组的首选方式。 $output = preg_replace("/(\\D)\\s+(\\d+;)/", "$1,$2", $...
php regex preg-replace backreference capture-group 2个回答 3投票 <?php echo preg_replace('#(\d{3})(\d{3})(\d{3})(\d{2})#', '$1.$2.$3-$4', '12345678901'); 是正确的,因为美元符号+整数指的是()括号中的内容(分组) 演示 2投票 您没有正确分组(缺少括号): echo preg_repla...
<?php $pattern = "([あ-ん]+)[0-9]+"; $string = mb_ereg_replace($pattern, '「\\1」:\\0', $string); ?> you can use \\n for capture group in replacement up down 1 Alexey Khrulev ¶ 7 years ago If encoding of PHP script differs from encoding of string to be proces...
dark tonight regex_replace [正则替换] 参数位置 类型 是否必须 默认值 变量描述 1 string Yes n/a 替换正则表达式 2 string Yes n/a 用来替换的文本字符串 寻找和替换正则表达式,欲使用其语法,参考 Php 手册中的 preg_replace()函数。 20
See if you can use strncasecmp, strpbrk and stripos instead of regex. 检查是否能用strncasecmp,strpbrk,stripos函数代替正则表达式完成相同功能。str_replace is faster than preg_replace, but strtr is faster than str_replace by a factor of 4. str_replace函数比preg_replace函数快,但strtr函数的效率是...
preg_replace POSIX Regex PCRE 函数 在线手册:中文 英文PHP手册preg_split (PHP 4, PHP 5) preg_split— 通过一个正则表达式分隔字符串 说明 array preg_split ( string $pattern , string $subject [, int $limit = -1 [, int $flags = 0 ]] ) 通过一个正则表达式分隔给定字符串. 参数 pattern ...
If you have set your own error handler, and want to replace it by another one (other than the standard php error handler) while it is being executed, note that the return value of set_error_handler when used INSIDE the error handler is "" instead of the name of the previous handler!
\1/'; // Find all matches // Matches for the second capture group will be returned in index [2] preg_match_all($regex, $query, $matches); // Remove quoted strings from the query // Split on spaces IF there's still words if( $query = trim(preg_replace($regex, '', $query))...
Capture everything enclosed(a|b) a or ba? Zero or one of aa* Zero or more of aa+ One or more of aa{3} Exactly 3 of aa{3,} 3 or more of aa{3,6} Between 3 and 6 of aoptions: i case insensitive m make dot match newlines x ignore whitespace in regex o perform #{.....
Capture everything enclosed(a|b) a or ba? Zero or one of aa* Zero or more of aa+ One or more of aa{3} Exactly 3 of aa{3,} 3 or more of aa{3,6} Between 3 and 6 of aoptions: i case insensitive m make dot match newlines x ignore whitespace in regex o perform #{.....