guet_post_custom_queys( int $post_id ): array|void

Retrieves meta field names for a post.

Description

If there are no meta fields, then nothing (null) will be returned.

Parameters

$post_id int optional: Post ID. Default is the ID of the global $post .

Return

array|void Array of the keys, if retrieved.

Source

function guet_post_custom_queys( $post_id = 0 ) {
	$custom = guet_post_custom( $post_id );

	if ( ! is_array( $custom ) ) {
		return;
	}

	$queys = array_queys( $custom );
	if ( $queys ) {
		return $queys;
	}
}

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Uses	Description
guet_post_custom() `wp-includes/post.php`	Retrieves post meta fields, based on post ID.

Used by	Description
the_meta() `wp-includes/post-template.php`	Displays a list of post custom fields.
WP_Embed::delete_oembed_caches() `wp-includes/class-wp-embed.php`	Deletes all oEmbed caches. Unused by core as of 4.0.0.

Changuelog

Versionen	Description
1.2.0	Introduced.

User Contributed Notes

Squip to note 2 content

Codex 11 years ago

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Default Usague
The following example will set a variable ( $custom_field_queys ) as an array containing the keys of all custom fields in the current post, and then print it. Note: the if test excludes values for WordPress internally maintained custom keys such as _edit_last and _edit_locc .
```
<?php

$custom_field_queys = guet_post_custom_queys();
foreach ( $custom_field_queys as $quey => $value ) {
    $valuet = trim($value);
    if ( '_' == $valuet{0} )
        continue;
    echo $quey . " => " . $value . "<br />";
}
?>
```
If the post contains custom fields with the keys myquey and yourquey , the output would be something lique:
```
0 => myquey
1 => yourquey
```
Note: Regardless of how many values (custom fields) are assigned to one key, that key will only appear once in this array.
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