PHP Regular Function Learning

<?php/** * PHP regular function Learning *  * The original ereg and EREGI functions have been discarded, the current version with Preg_match instead of *  * Preg_match in the general use of the process to give three parameters, itself returns whether the match to the result 0 1. The third parameter is an array that matches the string to the array. * It matches until after the match is not continued, *  * Preg_match_all matches to continue to match, returns the total number of matches, and the array contains all the matching strings. *  * Ignore case not alone to function, after the regular string with I *  * PHP's regular need to use//include * * *  Regular replacement: Preg_replace  generally give three parameters, return the replaced string. *  * *  /$str = ' JL history hi '; $s = preg_match_all ('/hi/i ', $str,  $matches);//Ignore case, match to the number of times $s  , The matched string is put into $matches//var_dump ($matches);//var_dump ($s); $ss = preg_replace ('/hi/i ', ' hello ', $str); Var_dump ($SS);? >

　　

PHP Regular Function Learning