Regular expression functions in php There are two sets of regular expression function libraries in php. One is, PHP regular expression function library (two sets)…

$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