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Add a pre_wp_get_image_alttext filter. #14024

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Add a pre_wp_get_image_alttext filter. #14024

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20 changes: 20 additions & 0 deletions src/wp-admin/includes/image.php
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Original file line number Diff line number Diff line change
Expand Up @@ -1086,6 +1086,26 @@ function wp_read_image_metadata( $file ) {
* @return string Embedded alternative text, empty when there is no alt text or DOM extension is not installed.
*/
function wp_get_image_alttext( $file ) {
/**
* Filters whether to short-circuit the parsing of alt text from an image.
*
* Returning a non-null value will short-circuit the image parsing,
* returning the passed value instead.
*
* This could be used simply to turn off the alt text generation
* (by returning an empty string from the filter instead of null).
* Or it could be used to run custom code for generating alt text.
*
* @since 7.2.0
*
* @param string|null $override_alt_text Short-circuit return value.
* @param string $file File path to the image.
*/
$override_alt_text = apply_filters( 'pre_wp_get_image_alttext', null, $file );
if ( null !== $override_alt_text ) {
return $override_alt_text;
}

$alt_text = '';

if ( ! class_exists( 'DOMDocument', false ) ) {
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