Generates an excerpt from the content, if needed.

The excerpt word amount will be 55 words and if the amount is greater than that, then the string ‘ […]‘ will be appended to the excerpt. If the string is less than 55 words, then the content will be returned as is.

The 55 word limit can be modified by plugins/themes using the excerpt_length filter The ‘ […]‘ string can be modified by plugins/themes using the excerpt_more filter

Signature

wp_trim_excerpt( $text = '' )
text
 (string) Optional. The excerpt. If set to empty, an excerpt is generated.
Default: ''

Return

(string) The excerpt.

Source

function wp_trim_excerpt($text = '') {
	$raw_excerpt = $text;
	if ( '' == $text ) {
		$text = get_the_content('');

		$text = strip_shortcodes( $text );

		/** This filter is documented in wp-includes/post-template.php */
		$text = apply_filters( 'the_content', $text );
		$text = str_replace(']]>', ']]>', $text);

		/**
		 * Filter the number of words in an excerpt.
		 *
		 * @since 2.7.0
		 *
		 * @param int $number The number of words. Default 55.
		 */
		$excerpt_length = apply_filters( 'excerpt_length', 55 );
		/**
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