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