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<?php

function localhost_admin_notice(){
	
	$whitelist = array('127.0.0.1', "::1");
	
	if( in_array( $_SERVER['REMOTE_ADDR'], $whitelist )):
	
		echo '<div class="notice notice-warning"><p>Let op: dit is een local site: '.$_SERVER['REMOTE_ADDR'].'</p></div>';
	

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<?php

$password = 'password';
$hash_password = wp_hash_password($password);
echo $hash_password;

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// This function counts the integers/strings only containing numbers to the target integer
function animateValue(className, start, end, duration) {

    // Get target element
    var obj = document.getElementById(className);
  
    // Set range
    var range = end - start;
  
    // Set minimum timer. Shorter than 50ms is not really visible any way

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Upload files

Using the REST API to upload a file to WordPress is quite simple. All you need is to send the file in a POST-Request to the wp/v2/media route.

There are two ways of sending a file. The first method simply sends the file in the body of the request. The following PHP script shows the basic principle:

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<?php

// Disable Emoji stylesheets and scripts
remove_action( 'wp_head', 'print_emoji_detection_script', 7 ); 
remove_action( 'admin_print_scripts', 'print_emoji_detection_script' ); 
remove_action( 'wp_print_styles', 'print_emoji_styles' ); 
remove_action( 'admin_print_styles', 'print_emoji_styles' );

?>

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add_action( 'wp_head', function() {
    echo '<meta name="google-site-verification" content="INSERT KEY HERE" />';
});

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<?php

function maintenance_mode() {
  if ( !current_user_can( 'administrator' ) ) {
    wp_die('<div style="text-align:center;"><img src="'.get_stylesheet_directory_uri().'/logo.png" width="180"/><p>Binnenkort is deze website online.</p></div>');
  }
}
add_action('get_header', 'maintenance_mode');

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<?php

add_action('admin_init', function () {
    // Redirect any user trying to access comments page
    global $pagenow;
    
    if ($pagenow === 'edit-comments.php') {
        wp_redirect(admin_url());
        exit;
    }

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<?php

add_action('login_head', function() {
  $custom_logo_id = get_theme_mod( 'custom_logo' );
  $logo = wp_get_attachment_image_src( $custom_logo_id , 'full' );
  if ( has_custom_logo() ) {
          echo '<style type="text/css">
          .login h1 a {
            background-image:url(' . esc_url( $logo[0] ) . ') !important;
            background-size:contain;

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<?php
// Get the tags.
$tags = get_the_tags();

// Count the total of tags.
$total_tags = count($tags);

// Set integer to 0.
// This is used to track at which item the loop is.
$i=0;