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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )apply_filters( "hook_name", "what_to_filter" ).Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
| Line | Code |
|---|---|
| 421 | * @param string $author The author of the comment |
| 422 | * @param string $email The email of the comment |
| 423 | * @param string $url The url used in the comment |
| 424 | * @param string $comment The comment content |
| 425 | * @param string $user_ip The comment author IP address |
| 426 | * @param string $user_agent The author's browser user agent |
| 427 | * @return bool True if comment contains blacklisted content, false if comment does not |
| 428 | */ |
| 429 | function wp_blacklist_check($author, $email, $url, $comment, $user_ip, $user_agent) { |
| 430 | do_action('wp_blacklist_check', $author, $email, $url, $comment, $user_ip, $user_agent); |
| 431 | |
| 432 | if ( preg_match_all('/&#(\d+);/', $comment . $author . $url, $chars) ) { |
| 433 | foreach ( (array) $chars[1] as $char ) { |
| 434 | // If it's an encoded char in the normal ASCII set, reject |
| 435 | if ( 38 == $char ) |
| 436 | continue; // Unless it's & |
| 437 | if ( $char < 128 ) |
| 438 | return true; |
| 439 | } |