Is it possible to validate PHP code?
I have a Custom Post Type (Film) with Custom Meta Boxes.
Everything is working fine, I can add new Films and details to the Custom Meta Boxes.
My problem is with the Update button. If I create a new film, add info and click Update a get a white screen.
I know the problem is with the function.php and the Custom Post Type but how do I find the mistake?
If I check of the source of the white page it shows 2 empty lines but code has no leading or trailing empty lines.
<?php
add_action( 'admin_print_styles-post-new.php', 'film_style', 11 );
add_action( 'admin_print_styles-post.php', 'film_style', 11 );
function film_style() {
global $post_type;
if( 'films' == $post_type )
wp_enqueue_style( 'film-style', get_stylesheet_directory_uri() . '/css/filmMetaBox.css');
}
?>
<?php
add_action('init', 'film_init');
function film_init(){
$film_labels = array(
'name' => _x('Film', 'post type general name'),
'singular_name' => _x('Films', 'post type singular name'),
'all_items' => __('All Films'),
'add_new' => _x('Add new Film', 'film'),
'add_new_item' => __('Add new Film'),
'edit_item' => __('Edit Film'),
'new_item' => __('New film'),
'view_item' => __('View film'),
'search_items' => __('Search in films'),
'not_found' => __('No films found'),
'not_found_in_trash' => __('No films found in trash'),
'parent_item_colon' => ''
);
$args = array(
'labels' => $film_labels,
'public' => true,
'publicly_queryable' => true,
'show_ui' => true,
'query_var' => true,
'rewrite' => true,
'capability_type' => 'post',
'hierarchical' => false,
'menu_position' => null,
'supports' => array('title','editor'),
'has_archive' => 'films',
'register_meta_box_cb' => 'cd_meta_box_add'
);
register_post_type('films',$args);
}
?>
<?php
add_action( 'add_meta_boxes', 'cd_meta_box_add' );
function cd_meta_box_add(){
add_meta_box( 'my-meta-box-id', 'Film Credits', 'cd_meta_box_cb', 'films', 'normal', 'high' );
}
function cd_meta_box_cb( $post ){
$values = get_post_custom( $post->ID );
$title = isset( $values['meta_box_title'] ) ? esc_attr( $values['meta_box_title'][0] ) : '';
$director = isset( $values['meta_box_director'] ) ? esc_attr( $values['meta_box_director'][0] ) : '';
$desc = isset( $values['meta_box_desc'] ) ? esc_attr( $values['meta_box_desc'][0] ) : '';
wp_nonce_field( 'my_meta_box_nonce', 'meta_box_nonce' );
?>
<div id="filmMeta">
<p>
<label for="meta_box_title" class="label">Film Title</label>
<input type="text" name="meta_box_title" id="meta_box_title" class="textInput" value="<?php echo $title; ?>" />
</p>
<p>
<label for="meta_box_title" class="label">Director</label>
<input type="text" name="meta_box_director" id="meta_box_title" class="textInput" value="<?php echo $director; ?>" />
</p>
<p>
<label for="meta_box_desc" class="label">Description</label>
<textarea name="meta_box_desc" id="meta_box_desc" class="textInput" col="100" row="5"><?php echo $desc; ?></textarea>
</p>
</div>
<?php
}
add_action( 'save_post', 'cd_meta_box_save' );
function cd_meta_box_save( $post_id ){
if( defined( 'DOING_AUTOSAVE' ) && DOING_AUTOSAVE ) return;// Bail if we're doing an auto save
// if our nonce isn't there, or we can't verify it, bail
if( !isset( $_POST['meta_box_nonce'] ) || !wp_verify_nonce( $_POST['meta_box_nonce'], 'my_meta_box_nonce' ) ) return;
if( !current_user_can( 'edit_post' ) ) return;// if our current user can't edit this post, bail
$allowed = array( // now we can actually save the data
'a' => array( // on allow a tags
'href' => array() // and those anchords can only have href attribute
)
);
if( isset( $_POST['meta_box_title'] ) )//if data set save it.
update_post_meta( $post_id, 'meta_box_title', wp_kses( $_POST['meta_box_title'], $allowed ) );
if( isset( $_POST['meta_box_director'] ) )
update_post_meta( $post_id, 'meta_box_director', wp_kses( $_POST['meta_box_director'], $allowed ) );
if( isset( $_POST['meta_box_desc'] ) )
update_post_meta( $post_id, 'meta_box_desc', wp_kses( $_POST['meta_box_desc'], $allowed ) );
}
?>
Answers:
Thank you for visiting the Q&A section on Magenaut. Please note that all the answers may not help you solve the issue immediately. So please treat them as advisements. If you found the post helpful (or not), leave a comment & I’ll get back to you as soon as possible.
Method 1
Your code works just fine on my end. So, I’d say your problem is elsewhere.
You can use standard debugging or FirePHP. I also use the following for cases where FirePHP doesn’t display information, i.e., save_post.
function my_log( $msg, $title = '' )
{
$error_dir = '/Applications/MAMP/logs/php_error.log';
$date = date( 'd.m.Y h:i:s' );
$msg = print_r( $msg, true );
$log = $title . " | " . $msg . "n";
error_log( $log, 3, $error_dir );
}
And inside your action callback: my_log( $_POST, 'Contents of $_POST' );.
As far as I know, there’s no such thing as “validate PHP”.
There are editors that’ll show errors while you write: http://www.jetbrains.com/phpstorm/
Method 2
If you need to var_dump() values in your save_post callback, simply exit; in there:
add_action( 'save_post', 'cd_meta_box_save' );
function cd_meta_box_save( $post_id )
{
$post = get_post( $post_id );
// do abort checks
if (
wp_is_post_revision( $post );
OR wp_is_post_autosave( $post );
OR ! wp_verify_nonce( ... )
OR ... etc.
)
return;
exit( var_dump( $post, $_POST ) );
}
Method 3
Method 1:
add_action('save_post', 'something_process1'); function something_process1() {
if(defined('DOING_AUTOSAVE') && DOING_AUTOSAVE) return;
print_r($_POST);
}
Method 2:
create log file (my_logs.txt) in a folder, where you use this code:
add_action('save_post', 'something_process2',11); function something_process2() {
print_r($_POST);
file_put_contents(dirname(__file__).'/my_logs.txt', "rnrn".ob_get_contents(), FILE_APPEND);
}
All methods was sourced from stackoverflow.com or stackexchange.com, is licensed under cc by-sa 2.5, cc by-sa 3.0 and cc by-sa 4.0