Parsing html tags with php. Get an array from this function

    <?php
           /*
            * parseHtml.php
            * My notation of variables:
            * i_ = integer, ex: i_count
            * a_ = array,       a_html
            * b_ = boolean,
            * s_ = string
            *
            * What it does:
            * - parses a html string and get the tags
            *   - exceptions: html tags like <br> <hr> </a>, etc
            * - At the end, the array will look like this:
            *      ["IMG"][0]["SRC"] = "xxx"
            *      ["IMG"][1]["SRC"] = "xxx"
            *      ["IMG"][1]["ALT"] = "xxx"
            *      ["A"][0]["HREF"] = "xxx"
            *
            */
           function parseHtml( $s_str )
           {
            $i_indicatorL = 0;
            $i_indicatorR = 0;
            $s_tagOption = "";
            $i_arrayCounter = 0;
            $a_html = array();
            // Search for a tag in string
            while( is_int(($i_indicatorL=strpos($s_str,"<",$i_indicatorR))) ) {
                    // Get everything into tag...
                    $i_indicatorL++;
                    $i_indicatorR = strpos($s_str,">", $i_indicatorL);
                    $s_temp = substr($s_str, $i_indicatorL, ($i_indicatorR-$i_indicatorL) );
                    $a_tag = explode( ' ', $s_temp );
                    // Here we get the tag's name
                    list( ,$s_tagName,, ) = each($a_tag);
                    $s_tagName = strtoupper($s_tagName);
                    // Well, I am not interesting in <br>, </font> or anything else like that...
                    // So, this is false for tags without options.
                    $b_boolOptions = is_array(($s_tagOption=each($a_tag))) && $s_tagOption[1];
                    if( $b_boolOptions ) {
                            // Without this, we will mess up the array
                            $i_arrayCounter = (int)count($a_html[$s_tagName]);
                            // get the tag options, like src="htt://". Here, s_tagTokOption is 'src'
and s_tagTokValue is '"http://"'

                            do {
                              $s_tagTokOption = strtoupper(strtok($s_tagOption[1], "="));
                              $s_tagTokValue  = trim(strtok("="));
                              $a_html[$s_tagName][$i_arrayCounter][$s_tagTokOption] =
$s_tagTokValue;
                              $b_boolOptions = is_array(($s_tagOption=each($a_tag))) &&
$s_tagOption[1];
                            } while( $b_boolOptions );
                    }
            }
            return $a_html;
           }

           ?>