Extended Post Name Limit

gistfile1.txt

<?php
/**
 * Plugin Name: Extended Post Name Limit
 * Description: Increase the character limit for post names in WordPress.
 */


// First, remove the standard hook.
remove_filter( 'sanitize_title', 'sanitize_title_with_dashes' );

// More info here: https://wordpress.stackexchange.com/questions/89767/how-to-increase-the-character-limit-for-post-name-of-200
// Add our custom hook.
add_filter( 'sanitize_title', 'pixarlabs_sanitize_title_with_dashes', 10, 3 );
function pixarlabs_sanitize_title_with_dashes( $title, $raw_title = '', $context = 'display' ) {
    $title = strip_tags( $title );
    // Preserve escaped octets.
    $title = preg_replace( '|%([a-fA-F0-9][a-fA-F0-9])|', '---$1---', $title );
    // Remove percent signs that are not part of an octet.
    $title = str_replace( '%', '', $title );
    // Restore octets.
    $title = preg_replace( '|---([a-fA-F0-9][a-fA-F0-9])---|', '%$1', $title );

    if ( seems_utf8( $title ) ) {
        if ( function_exists( 'mb_strtolower' ) ) {
            $title = mb_strtolower( $title, 'UTF-8' );
        }
        $title = utf8_uri_encode( $title, 1000 ); // <--- Here is the trick!
    }

    $title = strtolower( $title );
    $title = preg_replace( '/&.+?;/', '', $title ); // Kill entities.
    $title = str_replace( '.', '-', $title );

    if ( 'save' === $context ) {
        // Convert nbsp, ndash, and mdash to hyphens.
        $title = str_replace( array( '%c2%a0', '%e2%80%93', '%e2%80%94' ), '-', $title );

        // Strip these characters entirely.
        $title = str_replace( array(
            // iexcl and iquest.
            '%c2%a1', '%c2%bf',
            // Angle quotes.
            '%c2%ab', '%c2%bb', '%e2%80%b9', '%e2%80%ba',
            // Curly quotes.
            '%e2%80%98', '%e2%80%99', '%e2%80%9c', '%e2%80%9d',
            '%e2%80%9a', '%e2%80%9b', '%e2%80%9e', '%e2%80%9f',
            // Copy, reg, deg, hellip, and trade.
            '%c2%a9', '%c2%ae', '%c2%b0', '%e2%80%a6', '%e2%84%a2',
            // Grave accent, acute accent, macron, caron.
            '%cc%80', '%cc%81', '%cc%84', '%cc%8c',
        ), '', $title );

        // Convert times to x.
        $title = str_replace( '%c3%97', 'x', $title );
    }

    $title = preg_replace( '/[^%a-z0-9 _-]/', '', $title );
    $title = preg_replace( '/\s+/', '-', $title );
    $title = preg_replace( '|-+|', '-', $title );
    $title = trim( $title, '-' );

    return $title;
}