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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 |
|---|---|
| 1115 | * @since 1.5.0 |
| 1116 | * |
| 1117 | * @param string $author Comment author. |
| 1118 | * @param string $email Comment author's email. |
| 1119 | * @param string $url Comment author's URL. |
| 1120 | * @param string $comment Comment content. |
| 1121 | * @param string $user_ip Comment author's IP address. |
| 1122 | * @param string $user_agent Comment author's browser user agent. |
| 1123 | */ |
| 1124 | do_action( 'wp_blacklist_check', $author, $email, $url, $comment, $user_ip, $user_agent ); |
| 1125 | |
| 1126 | $mod_keys = trim( get_option('blacklist_keys') ); |
| 1127 | if ( '' == $mod_keys ) |
| 1128 | return false; // If moderation keys are empty |
| 1129 | $words = explode("\n", $mod_keys ); |
| 1130 | |
| 1131 | foreach ( (array) $words as $word ) { |
| 1132 | $word = trim($word); |
| 1133 | |