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Example of how to customize unfiltered string content using PHP instruction str_replace
add_filter( 'wp_link_pages_args', 'change_link_pages_args' );
/**
* Change the Link Pages Arguments - a demonstration of how to change
* "unfiltered" (meaning not passed through apply_filters())
* string data using PHP instruction str_replace().
*
* @since 1.0.0
*
* @param array $args
*
* @return array
*/
function change_link_pages_args( array $args ) {
$args['before'] = str_replace( 'Pages:', 'Read More:', $args['before'] );
return $args;
}
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