WordPress

Limit character in content and title in wordpress

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function break_text($text, $length = 500){

if(strlen($text)<$length+10) return $text;//don't cut if too short

$break_pos = strpos($text, ' ', $length);//find next space after desired length

$visible = substr($text, 0, $break_pos);

return balanceTags($visible) . " […]";

}

or with readmore

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function limit_text($text){

if(is_front_page())

{

$length = 250;

if(strlen($text)<$length+10) return $text; //don't cut if too short

$break_pos = strpos($text, ' ', $length); //find next space after desired length

$visible = substr($text, 0, $break_pos);

return balanceTags($visible) . "... <a href='".get_permalink()."'>read more</a>";

}else{

return $text;

}

Hide page visual editor if certain template is selected

Snippets

add_action( 'init', 'remove_editor_init' );

function remove_editor_init() {
    // If not in the admin, return.
    if ( ! is_admin() ) {
       return;
    }

// Get the post ID on edit post with filter_input super global inspection.
    $current_post_id = filter_input( INPUT_GET, 'post', FILTER_SANITIZE_NUMBER_INT );
    // Get the post ID on update post with filter_input super global inspection.
    $update_post_id = filter_input( INPUT_POST, 'post_ID', FILTER_SANITIZE_NUMBER_INT );

// Check to see if the post ID is set, else return.
    if ( isset( $current_post_id ) ) {
       $post_id = absint( $current_post_id );
    } else if ( isset( $update_post_id ) ) {
       $post_id = absint( $update_post_id );
    } else {
       return;
    }

// Don't do anything unless there is a post_id.
    if ( isset( $post_id ) ) {
       // Get the template of the current post.
       $template_file = get_post_meta( $post_id, '_wp_page_template', true );

// Example of removing page editor for page-your-template.php template.
       if (  'page-your-template.php' === $template_file ) {
           remove_post_type_support( 'page', 'editor' );
           // Other features can also be removed in addition to the editor. See: https://codex.wordpress.org/Function_Reference/remove_post_type_support.
       }
    }
}

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add_action( 'init', 'remove_editor_init' );

function remove_editor_init() {

// If not in the admin, return.

if ( ! is_admin() ) {

return;

}

// Get the post ID on edit post with filter_input super global inspection.

$current_post_id = filter_input( INPUT_GET, 'post', FILTER_SANITIZE_NUMBER_INT );

// Get the post ID on update post with filter_input super global inspection.

$update_post_id = filter_input( INPUT_POST, 'post_ID', FILTER_SANITIZE_NUMBER_INT );

// Check to see if the post ID is set, else return.

if ( isset( $current_post_id ) ) {

$post_id = absint( $current_post_id );

} else if ( isset( $update_post_id ) ) {

$post_id = absint( $update_post_id );

} else {

return;

}

// Don't do anything unless there is a post_id.

if ( isset( $post_id ) ) {

// Get the template of the current post.

$template_file = get_post_meta( $post_id, '_wp_page_template', true );

// Example of removing page editor for page-your-template.php template.

if ( 'page-your-template.php' === $template_file ) {

remove_post_type_support( 'page', 'editor' );

// Other features can also be removed in addition to the editor. See: https://codex.wordpress.org/Function_Reference/remove_post_type_support.

}

Remove Admin Menus

Snippets

add_action( 'admin_menu', 'remove_admin_menus' );
add_action( 'admin_menu', 'remove_admin_submenus' );

//Remove top level admin menus
function remove_admin_menus() {
    remove_menu_page( 'edit-comments.php' );
    remove_menu_page( 'link-manager.php' );
    remove_menu_page( 'tools.php' );
    remove_menu_page( 'plugins.php' );
    remove_menu_page( 'users.php' );
    remove_menu_page( 'options-general.php' );
    remove_menu_page( 'upload.php' );
    remove_menu_page( 'edit.php' );
    remove_menu_page( 'edit.php?post_type=page' );
    remove_menu_page( 'themes.php' );
}

//Remove sub level admin menus
function remove_admin_submenus() {
    remove_submenu_page( 'themes.php', 'theme-editor.php' );
    remove_submenu_page( 'themes.php', 'themes.php' );
    remove_submenu_page( 'edit.php', 'edit-tags.php?taxonomy=post_tag' );
    remove_submenu_page( 'edit.php', 'edit-tags.php?taxonomy=category' );
    remove_submenu_page( 'edit.php', 'post-new.php' );
    remove_submenu_page( 'themes.php', 'nav-menus.php' );
    remove_submenu_page( 'themes.php', 'widgets.php' );
    remove_submenu_page( 'themes.php', 'theme-editor.php' );
    remove_submenu_page( 'plugins.php', 'plugin-editor.php' );
    remove_submenu_page( 'plugins.php', 'plugin-install.php' );
    remove_submenu_page( 'users.php', 'users.php' );
    remove_submenu_page( 'users.php', 'user-new.php' );
    remove_submenu_page( 'upload.php', 'media-new.php' );
    remove_submenu_page( 'options-general.php', 'options-writing.php' );
    remove_submenu_page( 'options-general.php', 'options-discussion.php' );
    remove_submenu_page( 'options-general.php', 'options-reading.php' );
    remove_submenu_page( 'options-general.php', 'options-discussion.php' );
    remove_submenu_page( 'options-general.php', 'options-media.php' );
    remove_submenu_page( 'options-general.php', 'options-privacy.php' );
    remove_submenu_page( 'options-general.php', 'options-permalinks.php' );
    remove_submenu_page( 'index.php', 'update-core.php' );
}

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add_action( 'admin_menu', 'remove_admin_menus' );

add_action( 'admin_menu', 'remove_admin_submenus' );

//Remove top level admin menus

function remove_admin_menus() {

remove_menu_page( 'edit-comments.php' );

remove_menu_page( 'link-manager.php' );

remove_menu_page( 'tools.php' );

remove_menu_page( 'plugins.php' );

remove_menu_page( 'users.php' );

remove_menu_page( 'options-general.php' );

remove_menu_page( 'upload.php' );

remove_menu_page( 'edit.php' );

remove_menu_page( 'edit.php?post_type=page' );

remove_menu_page( 'themes.php' );

}

//Remove sub level admin menus

function remove_admin_submenus() {

remove_submenu_page( 'themes.php', 'theme-editor.php' );

remove_submenu_page( 'themes.php', 'themes.php' );

remove_submenu_page( 'edit.php', 'edit-tags.php?taxonomy=post_tag' );

remove_submenu_page( 'edit.php', 'edit-tags.php?taxonomy=category' );

remove_submenu_page( 'edit.php', 'post-new.php' );

remove_submenu_page( 'themes.php', 'nav-menus.php' );

remove_submenu_page( 'themes.php', 'widgets.php' );

remove_submenu_page( 'themes.php', 'theme-editor.php' );

remove_submenu_page( 'plugins.php', 'plugin-editor.php' );

remove_submenu_page( 'plugins.php', 'plugin-install.php' );

remove_submenu_page( 'users.php', 'users.php' );

remove_submenu_page( 'users.php', 'user-new.php' );

remove_submenu_page( 'upload.php', 'media-new.php' );

remove_submenu_page( 'options-general.php', 'options-writing.php' );

remove_submenu_page( 'options-general.php', 'options-discussion.php' );

remove_submenu_page( 'options-general.php', 'options-reading.php' );

remove_submenu_page( 'options-general.php', 'options-discussion.php' );

remove_submenu_page( 'options-general.php', 'options-media.php' );

remove_submenu_page( 'options-general.php', 'options-privacy.php' );

remove_submenu_page( 'options-general.php', 'options-permalinks.php' );

remove_submenu_page( 'index.php', 'update-core.php' );

}

has_post_thumbnail() not working

Snippets

Assuming that you’re in The Loop, you can fix this problem, by replacing:

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if ( has_post_thumbnail() ) {

// do a bunch of stuff

}

with

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$featured_image_url = wp_get_attachment_url( get_post_thumbnail_id( get_the_ID() ) );

if ( ! empty( $featured_image_url ) ) {

// do a bunch of stuff

}

Display admin menu urls – debug

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add_action( 'admin_init', 'wpse_136058_debug_admin_menu' );

function wpse_136058_debug_admin_menu() {

echo '<pre>' . print_r( $GLOBALS[ 'menu' ], TRUE) . '</pre>';

}