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Coding Standards: Replace include_once with require_once for required files.
Per [https://developer.wordpress.org/coding-standards/wordpress-coding-standards/php/#writing-include-require-statements WordPress PHP coding standards], it is ''strongly recommended'' to use `require[_once]` for unconditional includes. When using `include[_once]`, PHP will throw a warning when the file is not found but will continue execution, which will almost certainly lead to other errors/warnings/notices being thrown if your application depends on the file loaded, potentially leading to security leaks. For that reason, `require[_once]` is generally the better choice as it will throw a `Fatal Error` if the file cannot be found. Follow-up to [1674], [1812], [1964], [6779], [8540], [10521], [11005], [11911], [16065], [16149], [25421], [25466], [25823], [37714], [42981], [45448], [47198], [54276], [55633]. Props kausaralm, SergeyBiryukov. See #57839. git-svn-id: https://develop.svn.wordpress.org/trunk@55641 602fd350-edb4-49c9-b593-d223f7449a82
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@@ -3051,8 +3051,8 @@ function generic_ping( $post_id = 0 ) {
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* @param int|WP_Post $post Post ID or object.
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*/
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function pingback( $content, $post ) {
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include_once ABSPATH . WPINC . '/class-IXR.php';
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include_once ABSPATH . WPINC . '/class-wp-http-ixr-client.php';
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require_once ABSPATH . WPINC . '/class-IXR.php';
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require_once ABSPATH . WPINC . '/class-wp-http-ixr-client.php';
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// Original code by Mort (http://mort.mine.nu:8080).
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$post_links = array();
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@@ -3218,8 +3218,8 @@ function trackback( $trackback_url, $title, $excerpt, $ID ) {
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* @param string $path Path to send the ping.
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*/
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function weblog_ping( $server = '', $path = '' ) {
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include_once ABSPATH . WPINC . '/class-IXR.php';
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include_once ABSPATH . WPINC . '/class-wp-http-ixr-client.php';
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require_once ABSPATH . WPINC . '/class-IXR.php';
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require_once ABSPATH . WPINC . '/class-wp-http-ixr-client.php';
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// Using a timeout of 3 seconds should be enough to cover slow servers.
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$client = new WP_HTTP_IXR_Client( $server, ( ( ! strlen( trim( $path ) ) || ( '/' === $path ) ) ? false : $path ) );
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