Question

wp_trim_excerpt( string $text = '' )

Generates an excerpt from the content, if needed.

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description

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

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参数

$text

(string) (Optional) The excerpt. If set to empty, an excerpt is generated.

Default value: ''

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返回值

(string) The excerpt.

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源代码

File: wp-includes/formatting.php

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);

		/**
		 * Filters 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 );
		/**
		 * Filters the string in the "more" link displayed after a trimmed excerpt.
		 *
		 * @since 2.9.0
		 *
		 * @param string $more_string The string shown within the more link.
		 */
		$excerpt_more = apply_filters( 'excerpt_more', ' ' . '[…]' );
		$text = wp_trim_words( $text, $excerpt_length, $excerpt_more );
	}
	/**
	 * Filters the trimmed excerpt string.
	 *
	 * @since 2.8.0
	 *
	 * @param string $text        The trimmed text.
	 * @param string $raw_excerpt The text prior to trimming.
	 */
	return apply_filters( 'wp_trim_excerpt', $text, $raw_excerpt );
}

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更新日志

Version	description
1.5.0	Introduced.

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相关函数

Uses

• wp-includes/formatting.php: wp_trim_words()
• wp-includes/formatting.php: excerpt_length
• wp-includes/formatting.php: excerpt_more
• wp-includes/formatting.php: wp_trim_excerpt
• wp-includes/shortcodes.php: strip_shortcodes()
• wp-includes/plugin.php: apply_filters()
• wp-includes/post-template.php: get_the_content()
• wp-includes/post-template.php: the_content
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User Contributed Notes