Question

get_meta_keys()

Get a list of previously defined keys.

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description

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返回值

(mixed)

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源代码

File: wp-admin/includes/post.php

function get_meta_keys() {
	global $wpdb;

	$keys = $wpdb->get_col( "
			SELECT meta_key
			FROM $wpdb->postmeta
			GROUP BY meta_key
			ORDER BY meta_key" );

	return $keys;
}

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更新日志

Version	description
1.2.0	Introduced.

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相关函数

Uses

• wp-includes/wp-db.php: wpdb::get_col()

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User Contributed Notes