the_shortlink() WP 1.0

Displays the shortlink for a post.

Must be called from inside "The Loop"

Call like the_shortlink( __( 'Shortlinkage FTW' ) )

Return

Nothing (null).

Usage

the_shortlink( $text, $title, $before, $after );

$text(string)

Optional The link text or HTML to be displayed.
Default: 'This is the short link.'

$title(string)

Optional The tooltip for the link. Must be sanitized.
Default: sanitized post title

$before(string)

Optional HTML to display before the link.
Default: ''

$after(string)

Optional HTML to display after the link.
Default: ''

Code of the shortlink: wp-includes/link-template.php ^{WP 5.2.2}

<?php
function the_shortlink( $text = '', $title = '', $before = '', $after = '' ) {
	$post = get_post();

	if ( empty( $text ) ) {
		$text = __( 'This is the short link.' );
	}

	if ( empty( $title ) ) {
		$title = the_title_attribute( array( 'echo' => false ) );
	}

	$shortlink = wp_get_shortlink( $post->ID );

	if ( ! empty( $shortlink ) ) {
		$link = '<a rel="shortlink" href="' . esc_url( $shortlink ) . '" title="' . $title . '">' . $text . '</a>';

		/**
		 * Filters the short link anchor tag for a post.
		 *
		 * @since 3.0.0
		 *
		 * @param string $link      Shortlink anchor tag.
		 * @param string $shortlink Shortlink URL.
		 * @param string $text      Shortlink's text.
		 * @param string $title     Shortlink's title attribute.
		 */
		$link = apply_filters( 'the_shortlink', $link, $shortlink, $text, $title );
		echo $before, $link, $after;
	}
}

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From tag: Link (tag A in HTML)

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