Question

Alert: This function’s access is marked private. This means it is not intended for use by plugin or theme developers, only in other core functions. It is listed here for completeness.

_filter_query_attachment_filenames( array $clauses )

Filter the SQL clauses of an attachment query to include filenames.

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description

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参数

$clauses

(array) (Required) An array including WHERE, GROUP BY, JOIN, ORDER BY, DISTINCT, fields (SELECT), and LIMITS clauses.

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返回值

(array) The modified clauses.

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源代码

File: wp-includes/post.php

function _filter_query_attachment_filenames( $clauses ) {
	global $wpdb;
	remove_filter( 'posts_clauses', __FUNCTION__ );

	// Add a LEFT JOIN of the postmeta table so we don't trample existing JOINs.
	$clauses['join'] .= " LEFT JOIN {$wpdb->postmeta} AS sq1 ON ( {$wpdb->posts}.ID = sq1.post_id AND sq1.meta_key = '_wp_attached_file' )";

	$clauses['groupby'] = "{$wpdb->posts}.ID";

	$clauses['where'] = preg_replace(
		"/\({$wpdb->posts}.post_content (NOT LIKE|LIKE) (\'[^']+\')\)/",
		"$0 OR ( sq1.meta_value $1 $2 )",
		$clauses['where'] );

	return $clauses;
}

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更新日志

Version	description
4.7.0	Introduced.

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相关函数

Uses

• wp-includes/plugin.php: remove_filter()

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User Contributed Notes