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<?php
namespace PicoFeed\Parser;
use DateTime;
use DateTimeZone;
/**
* Date Parser
*
* @author Frederic Guillot
* @package Parser
*/
class DateParser
{
/**
* Timezone used to parse feed dates
*
* @access public
* @var string
*/
public $timezone = 'UTC';
/**
* Supported formats [ 'format' => length ]
*
* @access public
* @var array
*/
public $formats = array(
DATE_ATOM => null,
DATE_RSS => null,
DATE_COOKIE => null,
DATE_ISO8601 => null,
DATE_RFC822 => null,
DATE_RFC850 => null,
DATE_RFC1036 => null,
DATE_RFC1123 => null,
DATE_RFC2822 => null,
DATE_RFC3339 => null,
'D, d M Y H:i:s' => 25,
'D, d M Y h:i:s' => 25,
'D M d Y H:i:s' => 24,
'j M Y H:i:s' => 20,
'Y-m-d H:i:s' => 19,
'Y-m-d\TH:i:s' => 19,
'd/m/Y H:i:s' => 19,
'D, d M Y' => 16,
'Y-m-d' => 10,
'd-m-Y' => 10,
'm-d-Y' => 10,
'd.m.Y' => 10,
'm.d.Y' => 10,
'd/m/Y' => 10,
'm/d/Y' => 10,
);
/**
* Try to parse all date format for broken feeds
*
* @access public
* @param string $value Original date format
* @return integer Timestamp
*/
public function getTimestamp($value)
{
$value = trim($value);
foreach ($this->formats as $format => $length) {
$truncated_value = $value;
if ($length !== null) {
$truncated_value = substr($truncated_value, 0, $length);
}
$timestamp = $this->getValidDate($format, $truncated_value);
if ($timestamp > 0) {
return $timestamp;
}
}
$date = new DateTime('now', new DateTimeZone($this->timezone));
return $date->getTimestamp();
}
/**
* Get a valid date from a given format
*
* @access public
* @param string $format Date format
* @param string $value Original date value
* @return integer Timestamp
*/
public function getValidDate($format, $value)
{
$date = DateTime::createFromFormat($format, $value, new DateTimeZone($this->timezone));
if ($date !== false) {
$errors = DateTime::getLastErrors();
if ($errors['error_count'] === 0 && $errors['warning_count'] === 0) {
return $date->getTimestamp();
}
}
return 0;
}
}
|
