PHP preg_match regular expression function example

Regular expressions are used in almost all programming languages. This example introduces the application of the regular expression preg_match function in PHP. The

preg_match() function is used for regular expression matching, returning 1 successfully, otherwise returning 0.
preg_match() will stop matching after one successful match. If you want to match all results, you need to use the preg_match_all() function.

Syntax:

preg_match (pattern, subject, matches)

Parameters	Description
pattern	regular expression
subject	needs to match the search Object
matches	Optional, an array that stores matching results

Instance:
This instance matches strings with capital letters followed by . and spaces, and can only match J., because preg_match( ) will stop matching after one successful match, and will not match again.

<?<span>php
</span><span>$str</span>="Daniel J. Gross Catholic High School A. is a faith and family based community committed to developing Christian leaders through educational excellence in the Marianist tradition."<span>;
</span><span>if</span>(<span>preg_match</span>("/[A-Z]. /",<span>$str</span>,<span>$matches</span><span>)){
    </span><span>print_r</span>(<span>$matches</span><span>);
}
</span>?>

Output result:

<span>Array</span> ( [0] => J. ) 

Original address: http://www.manongjc.com/article/52.html

Related reading:

php regular expression function usage example

php preg_match Functions and php preg_match_al function l examples, methods, examples

php preg_match_all() function usage examples

php preg_match regular expression function examples

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