Do_action( 'wp_head' );

function hook_javascript() {
    ?>
        <script>
            alert('Page is loading...');
        </script>
    <?php
}
add_action('wp_head', 'hook_javascript');

Source: developer.wordpress.org

Do_action( 'wp_head' );

function hook_css() {
    ?>
        <style>
            .wp_head_example {
                background-color : #f1f1f1;
            }
        </style>
    <?php
}
add_action('wp_head', 'hook_css');

Source: developer.wordpress.org

Similar codes

0 vote123 views4 answers
Share var in a maser layout laravel
PHP
0 vote141 views1 answer
Copy file from one directory to another Laravel
PHP Laravel
3 votes125 views2 answers
Remove admin bar wordpress front end
PHP
1 vote112 views1 answer
None of the supported PHP extensions (PgSQL, PDO_PgSQL) are available.
PHP
21 votes229 views6 answers
Do shortcode wordpress
PHP Wordpress
0 vote107 views1 answer
File upload permission in php
PHP
1 vote119 views2 answers
Download pdf php
PHP
0 vote120 views5 answers
Localhost/comparison operator.php
PHP
11 votes115 views3 answers
Laravel get last month records
PHP
-2 votes102 views2 answers
Php export excel
PHP