^ 回到顶部
  • 人生没有定律,每个人都有自己的节奏
  • 本站wordpress建站教程均通过实践后发布,希望对你有帮助
  • 希望你的坚持,都是因为热爱,而不是因为不甘心
  • 8年wordpress建站经验,5星服务品质
  • 那些不愿意让你吃亏的人,才是真正值得你深交的人,也是值得你付出时间的人
  • 阿里云2核2g仅需86元/年

wordpress函数get_calendar()用法示例

get_calendar( bool $initial = true,  bool $echo = true )

Display calendar with days that have posts as links.


描述

The calendar is cached, which will be retrieved, if it exists. If there are no posts for the month, then it will not be displayed.

新用户2核2g仅需86元/年    领取1153套模板    免费cdn流量包    ¥3188礼包


参数

$initial

(bool)
(Optional)
Use initial calendar names.

Default value: true

$echo

(bool)
(Optional)
Set to false for return.

Default value: true


返回值

(string|void) String when retrieving.


源代码

File: wp-includes/general-template.php

function get_calendar( $initial = true, $echo = true ) {
	global $wpdb, $m, $monthnum, $year, $wp_locale, $posts;

	$key = md5( $m . $monthnum . $year );
	$cache = wp_cache_get( 'get_calendar', 'calendar' );

	if ( $cache && is_array( $cache ) && isset( $cache[ $key ] ) ) {
		/** This filter is documented in wp-includes/general-template.php */
		$output = apply_filters( 'get_calendar', $cache[ $key ] );

		if ( $echo ) {
			echo $output;
			return;
		}

		return $output;
	}

	if ( ! is_array( $cache ) ) {
		$cache = array();
	}

	// Quick check. If we have no posts at all, abort!
	if ( ! $posts ) {
		$gotsome = $wpdb->get_var("SELECT 1 as test FROM $wpdb->posts WHERE post_type = 'post' AND post_status = 'publish' LIMIT 1");
		if ( ! $gotsome ) {
			$cache[ $key ] = '';
			wp_cache_set( 'get_calendar', $cache, 'calendar' );
			return;
		}
	}

	if ( isset( $_GET['w'] ) ) {
		$w = (int) $_GET['w'];
	}
	// week_begins = 0 stands for Sunday
	$week_begins = (int) get_option( 'start_of_week' );
	$ts = current_time( 'timestamp' );

	// Let's figure out when we are
	if ( ! empty( $monthnum ) && ! empty( $year ) ) {
		$thismonth = zeroise( intval( $monthnum ), 2 );
		$thisyear = (int) $year;
	} elseif ( ! empty( $w ) ) {
		// We need to get the month from MySQL
		$thisyear = (int) substr( $m, 0, 4 );
		//it seems MySQL's weeks disagree with PHP's
		$d = ( ( $w - 1 ) * 7 ) + 6;
		$thismonth = $wpdb->get_var("SELECT DATE_FORMAT((DATE_ADD('{$thisyear}0101', INTERVAL $d DAY) ), '%m')");
	} elseif ( ! empty( $m ) ) {
		$thisyear = (int) substr( $m, 0, 4 );
		if ( strlen( $m ) < 6 ) {
			$thismonth = '01';
		} else {
			$thismonth = zeroise( (int) substr( $m, 4, 2 ), 2 );
		}
	} else {
		$thisyear = gmdate( 'Y', $ts );
		$thismonth = gmdate( 'm', $ts );
	}

	$unixmonth = mktime( 0, 0 , 0, $thismonth, 1, $thisyear );
	$last_day = date( 't', $unixmonth );

	// Get the next and previous month and year with at least one post
	$previous = $wpdb->get_row("SELECT MONTH(post_date) AS month, YEAR(post_date) AS year
		FROM $wpdb->posts
		WHERE post_date < '$thisyear-$thismonth-01'
		AND post_type = 'post' AND post_status = 'publish'
			ORDER BY post_date DESC
			LIMIT 1");
	$next = $wpdb->get_row("SELECT MONTH(post_date) AS month, YEAR(post_date) AS year
		FROM $wpdb->posts
		WHERE post_date > '$thisyear-$thismonth-{$last_day} 23:59:59'
		AND post_type = 'post' AND post_status = 'publish'
			ORDER BY post_date ASC
			LIMIT 1");

	/* translators: Calendar caption: 1: month name, 2: 4-digit year */
	$calendar_caption = _x('%1$s %2$s', 'calendar caption');
	$calendar_output = '<table id="wp-calendar">
	<caption>' . sprintf(
		$calendar_caption,
		$wp_locale->get_month( $thismonth ),
		date( 'Y', $unixmonth )
	) . '</caption>
	<thead>
	<tr>';

	$myweek = array();

	for ( $wdcount = 0; $wdcount <= 6; $wdcount++ ) {
		$myweek[] = $wp_locale->get_weekday( ( $wdcount + $week_begins ) % 7 );
	}

	foreach ( $myweek as $wd ) {
		$day_name = $initial ? $wp_locale->get_weekday_initial( $wd ) : $wp_locale->get_weekday_abbrev( $wd );
		$wd = esc_attr( $wd );
		$calendar_output .= "\n\t\t<th scope=\"col\" title=\"$wd\">$day_name</th>";
	}

	$calendar_output .= '
	</tr>
	</thead>

	<tfoot>
	<tr>';

	if ( $previous ) {
		$calendar_output .= "\n\t\t".'<td colspan="3" id="prev"><a href="' . get_month_link( $previous->year, $previous->month ) . '">&laquo; ' .
			$wp_locale->get_month_abbrev( $wp_locale->get_month( $previous->month ) ) .
		'</a></td>';
	} else {
		$calendar_output .= "\n\t\t".'<td colspan="3" id="prev" class="pad">&nbsp;</td>';
	}

	$calendar_output .= "\n\t\t".'<td class="pad">&nbsp;</td>';

	if ( $next ) {
		$calendar_output .= "\n\t\t".'<td colspan="3" id="next"><a href="' . get_month_link( $next->year, $next->month ) . '">' .
			$wp_locale->get_month_abbrev( $wp_locale->get_month( $next->month ) ) .
		' &raquo;</a></td>';
	} else {
		$calendar_output .= "\n\t\t".'<td colspan="3" id="next" class="pad">&nbsp;</td>';
	}

	$calendar_output .= '
	</tr>
	</tfoot>

	<tbody>
	<tr>';

	$daywithpost = array();

	// Get days with posts
	$dayswithposts = $wpdb->get_results("SELECT DISTINCT DAYOFMONTH(post_date)
		FROM $wpdb->posts WHERE post_date >= '{$thisyear}-{$thismonth}-01 00:00:00'
		AND post_type = 'post' AND post_status = 'publish'
		AND post_date <= '{$thisyear}-{$thismonth}-{$last_day} 23:59:59'", ARRAY_N);
	if ( $dayswithposts ) {
		foreach ( (array) $dayswithposts as $daywith ) {
			$daywithpost[] = $daywith[0];
		}
	}

	// See how much we should pad in the beginning
	$pad = calendar_week_mod( date( 'w', $unixmonth ) - $week_begins );
	if ( 0 != $pad ) {
		$calendar_output .= "\n\t\t".'<td colspan="'. esc_attr( $pad ) .'" class="pad">&nbsp;</td>';
	}

	$newrow = false;
	$daysinmonth = (int) date( 't', $unixmonth );

	for ( $day = 1; $day <= $daysinmonth; ++$day ) {
		if ( isset($newrow) && $newrow ) {
			$calendar_output .= "\n\t</tr>\n\t<tr>\n\t\t";
		}
		$newrow = false;

		if ( $day == gmdate( 'j', $ts ) &&
			$thismonth == gmdate( 'm', $ts ) &&
			$thisyear == gmdate( 'Y', $ts ) ) {
			$calendar_output .= '<td id="today">';
		} else {
			$calendar_output .= '<td>';
		}

		if ( in_array( $day, $daywithpost ) ) {
			// any posts today?
			$date_format = date( _x( 'F j, Y', 'daily archives date format' ), strtotime( "{$thisyear}-{$thismonth}-{$day}" ) );
			/* translators: Post calendar label. 1: Date */
			$label = sprintf( __( 'Posts published on %s' ), $date_format );
			$calendar_output .= sprintf(
				'<a href="%s" aria-label="%s">%s</a>',
				get_day_link( $thisyear, $thismonth, $day ),
				esc_attr( $label ),
				$day
			);
		} else {
			$calendar_output .= $day;
		}
		$calendar_output .= '</td>';

		if ( 6 == calendar_week_mod( date( 'w', mktime(0, 0 , 0, $thismonth, $day, $thisyear ) ) - $week_begins ) ) {
			$newrow = true;
		}
	}

	$pad = 7 - calendar_week_mod( date( 'w', mktime( 0, 0 , 0, $thismonth, $day, $thisyear ) ) - $week_begins );
	if ( $pad != 0 && $pad != 7 ) {
		$calendar_output .= "\n\t\t".'<td class="pad" colspan="'. esc_attr( $pad ) .'">&nbsp;</td>';
	}
	$calendar_output .= "\n\t</tr>\n\t</tbody>\n\t</table>";

	$cache[ $key ] = $calendar_output;
	wp_cache_set( 'get_calendar', $cache, 'calendar' );

	if ( $echo ) {
		/**
		 * Filters the HTML calendar output.
		 *
		 * @since 3.0.0
		 *
		 * @param string $calendar_output HTML output of the calendar.
		 */
		echo apply_filters( 'get_calendar', $calendar_output );
		return;
	}
	/** This filter is documented in wp-includes/general-template.php */
	return apply_filters( 'get_calendar', $calendar_output );
}

更新日志

Version 描述
1.0.0 Introduced.

相关函数

Uses

  • wp-includes/cache.php:
    wp_cache_get()
  • wp-includes/cache.php:
    wp_cache_set()
  • wp-includes/l10n.php:
    _x()
  • wp-includes/l10n.php:
    __()
  • wp-includes/formatting.php:
    esc_attr()
  • wp-includes/formatting.php:
    zeroise()
  • wp-includes/general-template.php:
    calendar_week_mod()
  • wp-includes/general-template.php:
    get_calendar
  • wp-includes/functions.php:
    current_time()
  • wp-includes/class-wp-locale.php:
    WP_Locale::get_month()
  • wp-includes/class-wp-locale.php:
    WP_Locale::get_month_abbrev()
  • wp-includes/class-wp-locale.php:
    WP_Locale::get_weekday()
  • wp-includes/class-wp-locale.php:
    WP_Locale::get_weekday_initial()
  • wp-includes/class-wp-locale.php:
    WP_Locale::get_weekday_abbrev()
  • wp-includes/link-template.php:
    get_month_link()
  • wp-includes/link-template.php:
    get_day_link()
  • wp-includes/plugin.php:
    apply_filters()
  • wp-includes/option.php:
    get_option()
  • wp-includes/wp-db.php:
    wpdb::get_var()
  • wp-includes/wp-db.php:
    wpdb::get_row()
  • wp-includes/wp-db.php:
    wpdb::get_results()
  • Show 16 more uses


Used By

  • wp-includes/widgets/class-wp-widget-calendar.php:
    WP_Widget_Calendar::widget()

让小雨知道,这篇文章帮到了你
扫码关注微信公众号zs40086(微搜片)随时随地微信看片,抢先福利电影等你来

热门推荐

如有疑问,请前往问答中心反馈!

反馈