Question

wp_post_mime_type_where( string|array $post_mime_types,  string $table_alias = '' )

Convert MIME types into SQL.

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description

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参数

$post_mime_types

(string|array) (Required) List of mime types or comma separated string of mime types.

$table_alias

(string) (Optional) Specify a table alias, if needed.

Default value: ''

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返回值

(string) The SQL AND clause for mime searching.

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源代码

File: wp-includes/post.php

function wp_post_mime_type_where( $post_mime_types, $table_alias = '' ) {
	$where = '';
	$wildcards = array('', '%', '%/%');
	if ( is_string($post_mime_types) )
		$post_mime_types = array_map('trim', explode(',', $post_mime_types));

	$wheres = array();

	foreach ( (array) $post_mime_types as $mime_type ) {
		$mime_type = preg_replace('/\s/', '', $mime_type);
		$slashpos = strpos($mime_type, '/');
		if ( false !== $slashpos ) {
			$mime_group = preg_replace('/[^-*.a-zA-Z0-9]/', '', substr($mime_type, 0, $slashpos));
			$mime_subgroup = preg_replace('/[^-*.+a-zA-Z0-9]/', '', substr($mime_type, $slashpos + 1));
			if ( empty($mime_subgroup) )
				$mime_subgroup = '*';
			else
				$mime_subgroup = str_replace('/', '', $mime_subgroup);
			$mime_pattern = "$mime_group/$mime_subgroup";
		} else {
			$mime_pattern = preg_replace('/[^-*.a-zA-Z0-9]/', '', $mime_type);
			if ( false === strpos($mime_pattern, '*') )
				$mime_pattern .= '/*';
		}

		$mime_pattern = preg_replace('/\*+/', '%', $mime_pattern);

		if ( in_array( $mime_type, $wildcards ) )
			return '';

		if ( false !== strpos($mime_pattern, '%') )
			$wheres[] = empty($table_alias) ? "post_mime_type LIKE '$mime_pattern'" : "$table_alias.post_mime_type LIKE '$mime_pattern'";
		else
			$wheres[] = empty($table_alias) ? "post_mime_type = '$mime_pattern'" : "$table_alias.post_mime_type = '$mime_pattern'";
	}
	if ( !empty($wheres) )
		$where = ' AND (' . join(' OR ', $wheres) . ') ';
	return $where;
}

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更新日志

Version	description
2.5.0	Introduced.

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相关函数

Used By

• wp-includes/class-wp-query.php: WP_Query::get_posts()
• wp-includes/post.php: wp_count_attachments()

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User Contributed Notes