apply_filters( ‘the_meta_key’, string $html, string $key, string $value )

Filters the HTML output of the li element in the post custom fields list.

Parameters

$li_html .= apply_filters( 'the_meta_key', $html, $key, $value );

Used by	Description
the_meta()`wp-includes/post-template.php`	Displays a list of post custom fields.

Version	Description
2.2.0	Introduced.

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