<?php
 
date_asctime( "Mon Oct 21 11:21:31 2012\x0A" );
date_asctime( "Mon Oct 22 12:22:32 2012\x0A" );
date_asctime( "Mon Oct 23 13:23:33 2012\x0A" );

print("==================\n");

date_rfc2822( 'Mon, 21 Oct 2012 21:01 -1011' );
date_rfc2822( 'Mon, 22 Oct 2012 22:02 -1012' );
date_rfc2822( 'Mon, 23 Oct 2012 23:03 -1013' );


/**
 * Parse C99's asctime()'s date format
 *
 * @access protected
 * @return int Timestamp
 */
function date_asctime($date)
{
    static $pcre;
    if (!$pcre)
    {
        $space = '[\x09\x20]+';

        $wday_name = 'Mon';  //$this->day_pcre;
        $mon_name = 'Oct';   //$this->month_pcre;

        $day = '([0-9]{1,2})';
        $hour = $sec = $min = '([0-9]{2})';
        $year = '([0-9]{4})';
        $terminator = '\x0A?\x00?';
        $pcre = '/^' . $wday_name . $space . $mon_name . $space . $day . $space . $hour . ':' . $min . ':' . $sec . $space . $year . $terminator . '$/i';
    }
    if (preg_match($pcre, $date, $match))
    {
       print_r($match);
    }
}


/**
 * Parse RFC2822's date format
 *
 * @access protected
 * @return int Timestamp
 */
function date_rfc2822($date)
{
    static $pcre;
    if (!$pcre)
    {
        $wsp = '[\x09\x20]';

         // $fws = '(?:' . $wsp . '+|' . $wsp . '*(?:\x0D\x0A' . $wsp . '+)+)';
        $fws = '(?:(?:(?:\x0D\x0A)?' . $wsp . ')+)';
        $optional_fws = $fws . '?';

        $day_name = 'Mon';  //$this->day_pcre;
        $month = 'Oct';     //$this->month_pcre;

        $day = '([0-9]{1,2})';
        $hour = $minute = $second = '([0-9]{2})';
        $year = '([0-9]{2,4})';
        $num_zone = '([+\-])([0-9]{2})([0-9]{2})';
        $character_zone = '([A-Z]{1,5})';
        $zone = '(?:' . $num_zone . '|' . $character_zone . ')';
        $pcre = '/(?:' . $optional_fws . $day_name . $optional_fws . ',)?' . $optional_fws . $day . $fws . $month . $fws . $year . $fws . $hour . $optional_fws . ':' . $optional_fws . $minute . '(?:' . $optional_fws . ':' . $optional_fws . $second . ')?' . $fws . $zone . '/i';
    }
    // if (preg_match($pcre, $this->remove_rfc2822_comments($date), $match))
    if (preg_match($pcre, $date, $match))
    {
       print_r($match);
    }
} 
?>