How to set custom title of custom page template?

Question

How to set custom title of custom page template?

I try use wp_title filter but it's not working.

Answer 1

Reference

Got success by adding this code to your-page-template.php file before get_header() function:

function my_page_title() {
    return 'Your value is '; // add dynamic content to this title (if needed)
}
add_action( 'pre_get_document_title', 'my_page_title' );

Answer 2

You can do a conditional and check if you are on a custom post type page, and then update the title:

function my_wp_title( $title, $sep ) {
    if (is_single('post-tyle')){
        // Update the title here, for example : $title .= $title . $post->post_title;
    }
    return $title;
}
add_filter( 'wp_title', 'my_wp_title', 10, 2 );

However, your theme must support wp_title. For doing so, add this in your theme's functions.php file:

add_theme_support( 'title-tag' );

Answer 3

There are times when you cannot do this from functions.php (you don't have the data you want to output yet). For these cases:

make a new copied header file header-mycustom.php and load it in your template

global $newtitle;
$newtitle="New Title";
get_header("mycustom");

in the header-mycustom.php replace wp_head with the following:

<?php 
ob_start();
wp_head();
$output = ob_get_contents();
ob_end_clean();
global $newtitle;
$output=preg_replace("/<title>(.+)<\/title>/","<title>$newtitle</title>",$output);
echo $output;   
?>

(This is the first time I feel I have to hack WP for such common task.)