Overide Variable in Child Theme

Question

I am trying to change the h1 tag in the head of my child theme from "Blog" to "Resources". The parent theme enqueues files with require_once and get_template_directory so it's very difficult to overwrite file through child theming. If anyone has a solution to that it would be great, but if not I thought I would just attempt to modify the variable in my functions file instead.

The parent theme uses this code basically.

function print_page_title() {
    global $post;
    $page_title = get_the_title($page_id);
    if(is_home()) {
        $page_title = esc_html__('Blog','crexis');
    } ?>

    <h1><?php echo esc_textarea($page_title); ?></h1><?php
}

(For testing purposes) if I modify it this way it works:

function print_page_title() {
    global $post;
    $page_title = get_the_title($page_id);
    if(is_home()) {
        $page_title = esc_html__('Blog','crexis');
    }

    if ( 'Blog' == $page_title ) {
        $page_title = 'Resources' ;
    } ?>
    <h1><?php echo esc_textarea($page_title); ?></h1><?php
}

But this (and other variations I've tried) doesn't work if I put the following in my child's functions.php:

function resources_header() {
    global $page_title;
    if ( 'Blog' == $page_title ) {
        $page_title = 'Resources' ;
    }
}
add_action( 'print_page_title', 'resources_header' );

I've also tried add_filter instead of add_action OR after_setup_theme instead of print_page_title. What am I doing wrong?

Answer 1

To override the variable directly add the fucntion print_page_title in child theme functions.php this should work as the parent theme uses if(!function_exists('print_page_title')) condition to check for the function, since child theme's function.php is loaded first this is used instead of parent theme.

Place the following code in your child-theme's functions.php

function print_page_title() {
    global $post;
    $page_title = get_the_title($page_id);
    if(is_home()) {
        $page_title = esc_html__('Blog','crexis');
    }

    if ( 'Blog' == $page_title ) {
        $page_title = 'Resources' ;
    } ?>
    <h1><?php echo esc_textarea($page_title); ?></h1><?php
}

---

add_action( 'print_page_title', 'resources_header' );

The above doesn't work because there is no action hook print_page_title. It works if the code in your parent theme is like:

if(!is_front_page() && ( theme_option('header_title') != 0 '' ....//conditions)  {
    do_action('print_page_title');
}

---

add_filter( 'print_page_title', 'resources_header' );

will work if the funcion in parent theme function is like:

function print_page_title() {
    global $post;
    $page_title = get_the_title($page_id);
    if(is_home()) {
        $page_title = esc_html__('Blog','crexis');
    } 

    $page_title = apply_filters('print_page_title',$page_title);

    ?>

    <h1><?php echo esc_textarea($page_title); ?></h1><?php
}