Use of preg regular function in PHP
the difference between 1.preg_match and Preg_match_all
The difference between Preg_match and Preg_match_all is that preg_match matches only once. The Preg_match_all all match until the end of the string. Cases:
In the use of regular expressions, I have been in the guerrilla, it is time to come up with a summary. Because of the irresistible reason of stupidity, can only choose to simply say, only write down the ASCII encoding character matching and
The basic syntax of php regular expressions is summarized in detail. First, let's take a look at two special characters: & amp; rsquo; ^ & amp; rsquo; and & amp; lsquo; $ & amp; rsquo; they are used to match The start and end of The string
: This article mainly introduces the PHP regular expression syntax summary. if you are interested in the PHP Tutorial, you can refer to it. Http://bbs.chinaunix.net/forum.php? Mod = viewthread & tid = 4101636.
Use well
Regular expressionPHP is often
First, Let's take a look at two special characters: ' ^ ' and ' $ ' they are used to match the start and end of the string, respectively, to illustrate
"^the": matches a string that starts with "the";"Of despair$": matches a string ending with "of
Reprinted from: http://blog.csdn.net/kkobebryant/article/details/267527
Basic syntax for regular expressions
First, let's take a look at two special characters: ' ^ ' and ' $ ' they are used to match the beginning and end of the string,
PHP regular expression syntax reprinted from: http://blog.csdn.net/kkobebryant/article/details/267527
Basic regular expression syntax
First, let's take a look at two special characters: '^' and '$'. they are used to match the start and end of the
To judge whether a string is Chinese in php, we will follow this idea: The code is as follows:Copy code $ Str = "php programming ";If (preg_match ("/^ [u4e00-u9fa5] + $/", $ str )){Print ("all strings are Chinese ");} Else {Print ("Not all
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