klenwell information services : PHP Ungreedy Search Example

PHP Ungreedy Search Example

Basic Format

DELIMITER START_FLAG (.*?) END_FLAG DELIMITER
$regex_p = '~#####(.*?)#####~';
$regex_p = sprintf('~%s(%s)%s~', preg_quote('<body>'), '.*?', preg_quote('</body>'));

Code Sample

$ungreedy_regex = sprintf('~%s~', '###(.*?)###');

$target = '(start)this is the # content ## we should extract(end)';

$subject = sprintf('###%s###', $target);

preg_match_all($ungreedy_regex, $subject, $Matches);

if ( $Matches[1][0] == $target ) {

    print '<h2 style="color:green;">success</h2>';

}

else {

    print '<h2 style="color:red;">fail</h2>';

}

$Data = array(

    'target' => $target,

    'preg_match_all' => $Matches

);

printf('<pre>%s</pre>', print_r($Data,1));

printf('<h4>code</h4>%s', highlight_file(__FILE__,1));

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PHP Ungreedy Search Example

Basic Format

Code Sample