Regular expression functions in php There are two sets of regular expression function libraries in php. One is

$string = “April 15, 2003”; $pattern = “/(\w+) (\d+), (\d+), (\d+ 43;)/i”; $replacement = “\${1}1,\$3”; print preg_replace($pattern, $replacement, $string ); preg_match_all() for global regular expression matching Grammar format ： preg_match_all (“|]+>(. *)[^>]+>|U”, “example: this is a test”, $out, PREG_PATTERN_ORDER) ; print $out[0][0].”, “.$out[0][1].” “; print $ out[1][0].”, “.$out[1][1].” “; Output result ：example: , this is a test example: , this is a test Original ：http://www.jb51.net/article/20400.htm