Youzify - BuddyPress Activity Posts & Comments Letters Restrictions

yzc_letters_restrictions.php

<?php
/**
* Youzify - Activity Posts & Comments Letters Restrictions
*/
 add_action( 'bp_activity_before_save', 'yzc_letters_restrictions', 10 );

function yzc_letters_restrictions( $activity ) {

    $error_msg = 'Sorry, you have added too many letters.';

    if ( $activity->type == 'activity_comment' ) {

        $max_comment_letters = 5;

        if ( yzc_is_max_letters( $max_comment_letters, $activity->content ) ) {
            exit( '-1<div id="message" class="error bp-ajax-message"><p>' . esc_html( $error_msg ) . '</p></div>' );
        }

    } else {

        $max_post_letters = 5;

        // Check For Restrictions.
        if ( yzc_is_max_letters( $max_post_letters, $activity->content ) ) {
            wp_send_json_error( array( 'error' => $error_msg ) );
        }

    }
}

/**
* Check for Max Letters.
*/
function yzc_is_max_letters( $max_letters, $content ) {

    // Delete Empty Spaces.
    $content = str_replace( '&nbsp;', '', $content );

    // Remove Spaces
    $content = trim( $content );

    // Remove All Links.
    $content = preg_replace('/\b((https?|ftp|file):\/\/|www\.)[-A-Z0-9+&@#\/%?=~_|$!:,.;]*[A-Z0-9+&@#\/%=~_|$]/i', '', $content );

    if ( apply_filters( 'yzmr_exclude_spaces_on_max_letters', true ) ) {
        $content = str_replace( ' ', '', $content );
    }

    // Get Letters Count.
    $count = strlen( wp_strip_all_tags( $content ) );

    return $count > $max_letters ? true : false;

}