WordPress - How to sanitize multi-line text from a textarea without losing line breaks?
Assuming I disinfect and save some meta message (called 'message') entered by the client like this...
update_post_meta($post_id, 'message', sanitize_text_field($_POST['message']));
..and afterward recover and endeavor to re-show the text like this...
echo '<textarea id="message" name="message">' . esc_textarea( get_post_meta( $post->ID, 'message', true ) ) . '</textarea>';
Where:
..all the line breaks get lost.
As per the WordPress codex, the line breaks are being stripped out by the sanitize_text_field() capability. So how might I clean the text entered by the client without losing their line breaks?
Solutions
update_post_meta(
$post_id,
'message',
implode( "\n", array_map( 'sanitize_textarea_field', explode( "\n", $_POST['message'] ) ) )
);
Use sanitize_text_field if you have any desire to clean text field.