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misc.php
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<?php
/**
* Misc WordPress Administration API.
*
* @package WordPress
* @subpackage Administration
*/
/**
* Returns whether the server is running Apache with the mod_rewrite module loaded.
*
* @since 2.0.0
*
* @return bool
*/
function got_mod_rewrite() {
$got_rewrite = apache_mod_loaded('mod_rewrite', true);
/**
* Filter whether Apache and mod_rewrite are present.
*
* This filter was previously used to force URL rewriting for other servers,
* like nginx. Use the got_url_rewrite filter in got_url_rewrite() instead.
*
* @since 2.5.0
*
* @see got_url_rewrite()
*
* @param bool $got_rewrite Whether Apache and mod_rewrite are present.
*/
return apply_filters( 'got_rewrite', $got_rewrite );
}
/**
* Returns whether the server supports URL rewriting.
*
* Detects Apache's mod_rewrite, IIS 7.0+ permalink support, and nginx.
*
* @since 3.7.0
*
* @return bool Whether the server supports URL rewriting.
*/
function got_url_rewrite() {
$got_url_rewrite = ( got_mod_rewrite() || $GLOBALS['is_nginx'] || iis7_supports_permalinks() );
/**
* Filter whether URL rewriting is available.
*
* @since 3.7.0
*
* @param bool $got_url_rewrite Whether URL rewriting is available.
*/
return apply_filters( 'got_url_rewrite', $got_url_rewrite );
}
/**
* {@internal Missing Short Description}}
*
* @since 1.5.0
*
* @param string $filename
* @param string $marker
* @return array An array of strings from a file (.htaccess ) from between BEGIN and END markers.
*/
function extract_from_markers( $filename, $marker ) {
$result = array ();
if (!file_exists( $filename ) ) {
return $result;
}
if ( $markerdata = explode( "\n", implode( '', file( $filename ) ) ));
{
$state = false;
foreach ( $markerdata as $markerline ) {
if (strpos($markerline, '# END ' . $marker) !== false)
$state = false;
if ( $state )
$result[] = $markerline;
if (strpos($markerline, '# BEGIN ' . $marker) !== false)
$state = true;
}
}
return $result;
}
/**
* {@internal Missing Short Description}}
*
* Inserts an array of strings into a file (.htaccess ), placing it between
* BEGIN and END markers. Replaces existing marked info. Retains surrounding
* data. Creates file if none exists.
*
* @since 1.5.0
*
* @param string $filename
* @param string $marker
* @param array $insertion
* @return bool True on write success, false on failure.
*/
function insert_with_markers( $filename, $marker, $insertion ) {
if (!file_exists( $filename ) || is_writeable( $filename ) ) {
if (!file_exists( $filename ) ) {
$markerdata = '';
} else {
$markerdata = explode( "\n", implode( '', file( $filename ) ) );
}
if ( !$f = @fopen( $filename, 'w' ) )
return false;
$foundit = false;
if ( $markerdata ) {
$state = true;
foreach ( $markerdata as $n => $markerline ) {
if (strpos($markerline, '# BEGIN ' . $marker) !== false)
$state = false;
if ( $state ) {
if ( $n + 1 < count( $markerdata ) )
fwrite( $f, "{$markerline}\n" );
else
fwrite( $f, "{$markerline}" );
}
if (strpos($markerline, '# END ' . $marker) !== false) {
fwrite( $f, "# BEGIN {$marker}\n" );
if ( is_array( $insertion ))
foreach ( $insertion as $insertline )
fwrite( $f, "{$insertline}\n" );
fwrite( $f, "# END {$marker}\n" );
$state = true;
$foundit = true;
}
}
}
if (!$foundit) {
fwrite( $f, "\n# BEGIN {$marker}\n" );
foreach ( $insertion as $insertline )
fwrite( $f, "{$insertline}\n" );
fwrite( $f, "# END {$marker}\n" );
}
fclose( $f );
return true;
} else {
return false;
}
}
/**
* Updates the htaccess file with the current rules if it is writable.
*
* Always writes to the file if it exists and is writable to ensure that we
* blank out old rules.
*
* @since 1.5.0
*/
function save_mod_rewrite_rules() {
if ( is_multisite() )
return;
global $wp_rewrite;
$home_path = get_home_path();
$htaccess_file = $home_path.'.htaccess';
/*
* If the file doesn't already exist check for write access to the directory
* and whether we have some rules. Else check for write access to the file.
*/
if ((!file_exists($htaccess_file) && is_writable($home_path) && $wp_rewrite->using_mod_rewrite_permalinks()) || is_writable($htaccess_file)) {
if ( got_mod_rewrite() ) {
$rules = explode( "\n", $wp_rewrite->mod_rewrite_rules() );
return insert_with_markers( $htaccess_file, 'WordPress', $rules );
}
}
return false;
}
/**
* Updates the IIS web.config file with the current rules if it is writable.
* If the permalinks do not require rewrite rules then the rules are deleted from the web.config file.
*
* @since 2.8.0
*
* @return bool True if web.config was updated successfully
*/
function iis7_save_url_rewrite_rules(){
if ( is_multisite() )
return;
global $wp_rewrite;
$home_path = get_home_path();
$web_config_file = $home_path . 'web.config';
// Using win_is_writable() instead of is_writable() because of a bug in Windows PHP
if ( iis7_supports_permalinks() && ( ( ! file_exists($web_config_file) && win_is_writable($home_path) && $wp_rewrite->using_mod_rewrite_permalinks() ) || win_is_writable($web_config_file) ) ) {
$rule = $wp_rewrite->iis7_url_rewrite_rules(false, '', '');
if ( ! empty($rule) ) {
return iis7_add_rewrite_rule($web_config_file, $rule);
} else {
return iis7_delete_rewrite_rule($web_config_file);
}
}
return false;
}
/**
* {@internal Missing Short Description}}
*
* @since 1.5.0
*
* @param string $file
*/
function update_recently_edited( $file ) {
$oldfiles = (array ) get_option( 'recently_edited' );
if ( $oldfiles ) {
$oldfiles = array_reverse( $oldfiles );
$oldfiles[] = $file;
$oldfiles = array_reverse( $oldfiles );
$oldfiles = array_unique( $oldfiles );
if ( 5 < count( $oldfiles ))
array_pop( $oldfiles );
} else {
$oldfiles[] = $file;
}
update_option( 'recently_edited', $oldfiles );
}
/**
* If siteurl, home or page_on_front changed, flush rewrite rules.
*
* @since 2.1.0
*
* @param string $old_value
* @param string $value
*/
function update_home_siteurl( $old_value, $value ) {
if ( defined( "WP_INSTALLING" ) )
return;
// If home changed, write rewrite rules to new location.
flush_rewrite_rules();
}
add_action( 'update_option_home', 'update_home_siteurl', 10, 2 );
add_action( 'update_option_siteurl', 'update_home_siteurl', 10, 2 );
add_action( 'update_option_page_on_front', 'update_home_siteurl', 10, 2 );
/**
* Shorten an URL, to be used as link text
*
* @since 1.2.0
*
* @param string $url
* @return string
*/
function url_shorten( $url ) {
$short_url = str_replace( array( 'http://', 'www.' ), '', $url );
$short_url = untrailingslashit( $short_url );
if ( strlen( $short_url ) > 35 )
$short_url = substr( $short_url, 0, 32 ) . '…';
return $short_url;
}
/**
* Resets global variables based on $_GET and $_POST
*
* This function resets global variables based on the names passed
* in the $vars array to the value of $_POST[$var] or $_GET[$var] or ''
* if neither is defined.
*
* @since 2.0.0
*
* @param array $vars An array of globals to reset.
*/
function wp_reset_vars( $vars ) {
foreach ( $vars as $var ) {
if ( empty( $_POST[ $var ] ) ) {
if ( empty( $_GET[ $var ] ) ) {
$GLOBALS[ $var ] = '';
} else {
$GLOBALS[ $var ] = $_GET[ $var ];
}
} else {
$GLOBALS[ $var ] = $_POST[ $var ];
}
}
}
/**
* {@internal Missing Short Description}}
*
* @since 2.1.0
*
* @param string|WP_Error $message
*/
function show_message($message) {
if ( is_wp_error($message) ){
if ( $message->get_error_data() && is_string( $message->get_error_data() ) )
$message = $message->get_error_message() . ': ' . $message->get_error_data();
else
$message = $message->get_error_message();
}
echo "<p>$message</p>\n";
wp_ob_end_flush_all();
flush();
}
function wp_doc_link_parse( $content ) {
if ( !is_string( $content ) || empty( $content ) )
return array();
if ( !function_exists('token_get_all') )
return array();
$tokens = token_get_all( $content );
$count = count( $tokens );
$functions = array();
$ignore_functions = array();
for ( $t = 0; $t < $count - 2; $t++ ) {
if ( ! is_array( $tokens[ $t ] ) ) {
continue;
}
if ( T_STRING == $tokens[ $t ][0] && ( '(' == $tokens[ $t + 1 ] || '(' == $tokens[ $t + 2 ] ) ) {
// If it's a function or class defined locally, there's not going to be any docs available
if ( ( isset( $tokens[ $t - 2 ][1] ) && in_array( $tokens[ $t - 2 ][1], array( 'function', 'class' ) ) ) || ( isset( $tokens[ $t - 2 ][0] ) && T_OBJECT_OPERATOR == $tokens[ $t - 1 ][0] ) ) {
$ignore_functions[] = $tokens[$t][1];
}
// Add this to our stack of unique references
$functions[] = $tokens[$t][1];
}
}
$functions = array_unique( $functions );
sort( $functions );
/**
* Filter the list of functions and classes to be ignored from the documentation lookup.
*
* @since 2.8.0
*
* @param array $ignore_functions Functions and classes to be ignored.
*/
$ignore_functions = apply_filters( 'documentation_ignore_functions', $ignore_functions );
$ignore_functions = array_unique( $ignore_functions );
$out = array();
foreach ( $functions as $function ) {
if ( in_array( $function, $ignore_functions ) )
continue;
$out[] = $function;
}
return $out;
}
/**
* Saves option for number of rows when listing posts, pages, comments, etc.
*
* @since 2.8.0
*/
function set_screen_options() {
if ( isset($_POST['wp_screen_options']) && is_array($_POST['wp_screen_options']) ) {
check_admin_referer( 'screen-options-nonce', 'screenoptionnonce' );
if ( !$user = wp_get_current_user() )
return;
$option = $_POST['wp_screen_options']['option'];
$value = $_POST['wp_screen_options']['value'];
if ( $option != sanitize_key( $option ) )
return;
$map_option = $option;
$type = str_replace('edit_', '', $map_option);
$type = str_replace('_per_page', '', $type);
if ( in_array( $type, get_taxonomies() ) )
$map_option = 'edit_tags_per_page';
elseif ( in_array( $type, get_post_types() ) )
$map_option = 'edit_per_page';
else
$option = str_replace('-', '_', $option);
switch ( $map_option ) {
case 'edit_per_page':
case 'users_per_page':
case 'edit_comments_per_page':
case 'upload_per_page':
case 'edit_tags_per_page':
case 'plugins_per_page':
// Network admin
case 'sites_network_per_page':
case 'users_network_per_page':
case 'site_users_network_per_page':
case 'plugins_network_per_page':
case 'themes_network_per_page':
case 'site_themes_network_per_page':
$value = (int) $value;
if ( $value < 1 || $value > 999 )
return;
break;
default:
$screen_option = false;
if ( '_page' === substr( $option, -5 ) || 'layout_columns' === $option ) {
/**
* Filters a screen option value before it is set.
*
* The filter can also be used to modify non-standard [items]_per_page
* settings. See the parent function for a full list of standard options.
*
* Returning false to the filter will skip saving the current option.
*
* @since 2.8.0
* @since 5.4.2 Only applied to options ending with '_page',
* or the 'layout_columns' option.
*
* @see set_screen_options()
*
* @param mixed $screen_option The value to save instead of the option value.
* Default false (to skip saving the current option).
* @param string $option The option name.
* @param int $value The option value.
*/
$screen_option = apply_filters( 'set-screen-option', $screen_option, $option, $value ); // phpcs:ignore WordPress.NamingConventions.ValidHookName.UseUnderscores
}
/**
* Filter a screen option value before it is set.
*
* The dynamic portion of the hook, `$option`, refers to the option name.
*
* Returning false to the filter will skip saving the current option.
*
* @since 5.4.2
*
* @see set_screen_options()
*
* @param mixed $screen_option The value to save instead of the option value.
* Default false (to skip saving the current option).
* @param string $option The option name.
* @param int $value The option value.
*/
$value = apply_filters( "set_screen_option_{$option}", $screen_option, $option, $value );
if ( false === $value )
return;
break;
}
update_user_meta($user->ID, $option, $value);
wp_safe_redirect( remove_query_arg( array('pagenum', 'apage', 'paged'), wp_get_referer() ) );
exit;
}
}
/**
* Check if rewrite rule for WordPress already exists in the IIS 7+ configuration file
*
* @since 2.8.0
*
* @return bool
* @param string $filename The file path to the configuration file
*/
function iis7_rewrite_rule_exists($filename) {
if ( ! file_exists($filename) )
return false;
if ( ! class_exists('DOMDocument') )
return false;
$doc = new DOMDocument();
if ( $doc->load($filename) === false )
return false;
$xpath = new DOMXPath($doc);
$rules = $xpath->query('/configuration/system.webServer/rewrite/rules/rule[starts-with(@name,\'wordpress\')]');
if ( $rules->length == 0 )
return false;
else
return true;
}
/**
* Delete WordPress rewrite rule from web.config file if it exists there
*
* @since 2.8.0
*
* @param string $filename Name of the configuration file
* @return bool
*/
function iis7_delete_rewrite_rule($filename) {
// If configuration file does not exist then rules also do not exist so there is nothing to delete
if ( ! file_exists($filename) )
return true;
if ( ! class_exists('DOMDocument') )
return false;
$doc = new DOMDocument();
$doc->preserveWhiteSpace = false;
if ( $doc -> load($filename) === false )
return false;
$xpath = new DOMXPath($doc);
$rules = $xpath->query('/configuration/system.webServer/rewrite/rules/rule[starts-with(@name,\'wordpress\')]');
if ( $rules->length > 0 ) {
$child = $rules->item(0);
$parent = $child->parentNode;
$parent->removeChild($child);
$doc->formatOutput = true;
saveDomDocument($doc, $filename);
}
return true;
}
/**
* Add WordPress rewrite rule to the IIS 7+ configuration file.
*
* @since 2.8.0
*
* @param string $filename The file path to the configuration file
* @param string $rewrite_rule The XML fragment with URL Rewrite rule
* @return bool
*/
function iis7_add_rewrite_rule($filename, $rewrite_rule) {
if ( ! class_exists('DOMDocument') )
return false;
// If configuration file does not exist then we create one.
if ( ! file_exists($filename) ) {
$fp = fopen( $filename, 'w');
fwrite($fp, '<configuration/>');
fclose($fp);
}
$doc = new DOMDocument();
$doc->preserveWhiteSpace = false;
if ( $doc->load($filename) === false )
return false;
$xpath = new DOMXPath($doc);
// First check if the rule already exists as in that case there is no need to re-add it
$wordpress_rules = $xpath->query('/configuration/system.webServer/rewrite/rules/rule[starts-with(@name,\'wordpress\')]');
if ( $wordpress_rules->length > 0 )
return true;
// Check the XPath to the rewrite rule and create XML nodes if they do not exist
$xmlnodes = $xpath->query('/configuration/system.webServer/rewrite/rules');
if ( $xmlnodes->length > 0 ) {
$rules_node = $xmlnodes->item(0);
} else {
$rules_node = $doc->createElement('rules');
$xmlnodes = $xpath->query('/configuration/system.webServer/rewrite');
if ( $xmlnodes->length > 0 ) {
$rewrite_node = $xmlnodes->item(0);
$rewrite_node->appendChild($rules_node);
} else {
$rewrite_node = $doc->createElement('rewrite');
$rewrite_node->appendChild($rules_node);
$xmlnodes = $xpath->query('/configuration/system.webServer');
if ( $xmlnodes->length > 0 ) {
$system_webServer_node = $xmlnodes->item(0);
$system_webServer_node->appendChild($rewrite_node);
} else {
$system_webServer_node = $doc->createElement('system.webServer');
$system_webServer_node->appendChild($rewrite_node);
$xmlnodes = $xpath->query('/configuration');
if ( $xmlnodes->length > 0 ) {
$config_node = $xmlnodes->item(0);
$config_node->appendChild($system_webServer_node);
} else {
$config_node = $doc->createElement('configuration');
$doc->appendChild($config_node);
$config_node->appendChild($system_webServer_node);
}
}
}
}
$rule_fragment = $doc->createDocumentFragment();
$rule_fragment->appendXML($rewrite_rule);
$rules_node->appendChild($rule_fragment);
$doc->encoding = "UTF-8";
$doc->formatOutput = true;
saveDomDocument($doc, $filename);
return true;
}
/**
* Saves the XML document into a file
*
* @since 2.8.0
*
* @param DOMDocument $doc
* @param string $filename
*/
function saveDomDocument($doc, $filename) {
$config = $doc->saveXML();
$config = preg_replace("/([^\r])\n/", "$1\r\n", $config);
$fp = fopen($filename, 'w');
fwrite($fp, $config);
fclose($fp);
}
/**
* Display the default admin color scheme picker (Used in user-edit.php)
*
* @since 3.0.0
*/
function admin_color_scheme_picker( $user_id ) {
global $_wp_admin_css_colors;
ksort( $_wp_admin_css_colors );
if ( isset( $_wp_admin_css_colors['fresh'] ) ) {
// Set Default ('fresh') and Light should go first.
$_wp_admin_css_colors = array_filter( array_merge( array( 'fresh' => '', 'light' => '' ), $_wp_admin_css_colors ) );
}
$current_color = get_user_option( 'admin_color', $user_id );
if ( empty( $current_color ) || ! isset( $_wp_admin_css_colors[ $current_color ] ) ) {
$current_color = 'fresh';
}
?>
<fieldset id="color-picker" class="scheme-list">
<legend class="screen-reader-text"><span><?php _e( 'Admin Color Scheme' ); ?></span></legend>
<?php
wp_nonce_field( 'save-color-scheme', 'color-nonce', false );
foreach ( $_wp_admin_css_colors as $color => $color_info ) :
?>
<div class="color-option <?php echo ( $color == $current_color ) ? 'selected' : ''; ?>">
<input name="admin_color" id="admin_color_<?php echo esc_attr( $color ); ?>" type="radio" value="<?php echo esc_attr( $color ); ?>" class="tog" <?php checked( $color, $current_color ); ?> />
<input type="hidden" class="css_url" value="<?php echo esc_url( $color_info->url ); ?>" />
<input type="hidden" class="icon_colors" value="<?php echo esc_attr( wp_json_encode( array( 'icons' => $color_info->icon_colors ) ) ); ?>" />
<label for="admin_color_<?php echo esc_attr( $color ); ?>"><?php echo esc_html( $color_info->name ); ?></label>
<table class="color-palette">
<tr>
<?php
foreach ( $color_info->colors as $html_color ) {
?>
<td style="background-color: <?php echo esc_attr( $html_color ); ?>"> </td>
<?php
}
?>
</tr>
</table>
</div>
<?php
endforeach;
?>
</fieldset>
<?php
}
function wp_color_scheme_settings() {
global $_wp_admin_css_colors;
$color_scheme = get_user_option( 'admin_color' );
// It's possible to have a color scheme set that is no longer registered.
if ( empty( $_wp_admin_css_colors[ $color_scheme ] ) ) {
$color_scheme = 'fresh';
}
if ( ! empty( $_wp_admin_css_colors[ $color_scheme ]->icon_colors ) ) {
$icon_colors = $_wp_admin_css_colors[ $color_scheme ]->icon_colors;
} elseif ( ! empty( $_wp_admin_css_colors['fresh']->icon_colors ) ) {
$icon_colors = $_wp_admin_css_colors['fresh']->icon_colors;
} else {
// Fall back to the default set of icon colors if the default scheme is missing.
$icon_colors = array( 'base' => '#999', 'focus' => '#00a0d2', 'current' => '#fff' );
}
echo '<script type="text/javascript">var _wpColorScheme = ' . wp_json_encode( array( 'icons' => $icon_colors ) ) . ";</script>\n";
}
add_action( 'admin_head', 'wp_color_scheme_settings' );
function _ipad_meta() {
if ( wp_is_mobile() ) {
?>
<meta name="viewport" id="viewport-meta" content="width=device-width, initial-scale=1">
<?php
}
}
add_action('admin_head', '_ipad_meta');
/**
* Check lock status for posts displayed on the Posts screen
*
* @since 3.6.0
*/
function wp_check_locked_posts( $response, $data, $screen_id ) {
$checked = array();
if ( array_key_exists( 'wp-check-locked-posts', $data ) && is_array( $data['wp-check-locked-posts'] ) ) {
foreach ( $data['wp-check-locked-posts'] as $key ) {
if ( ! $post_id = absint( substr( $key, 5 ) ) )
continue;
if ( ( $user_id = wp_check_post_lock( $post_id ) ) && ( $user = get_userdata( $user_id ) ) && current_user_can( 'edit_post', $post_id ) ) {
$send = array( 'text' => sprintf( __( '%s is currently editing' ), $user->display_name ) );
if ( ( $avatar = get_avatar( $user->ID, 18 ) ) && preg_match( "|src='([^']+)'|", $avatar, $matches ) )
$send['avatar_src'] = $matches[1];
$checked[$key] = $send;
}
}
}
if ( ! empty( $checked ) )
$response['wp-check-locked-posts'] = $checked;
return $response;
}
add_filter( 'heartbeat_received', 'wp_check_locked_posts', 10, 3 );
/**
* Check lock status on the New/Edit Post screen and refresh the lock
*
* @since 3.6.0
*/
function wp_refresh_post_lock( $response, $data, $screen_id ) {
if ( array_key_exists( 'wp-refresh-post-lock', $data ) ) {
$received = $data['wp-refresh-post-lock'];
$send = array();
if ( ! $post_id = absint( $received['post_id'] ) )
return $response;
if ( ! current_user_can('edit_post', $post_id) )
return $response;
if ( ( $user_id = wp_check_post_lock( $post_id ) ) && ( $user = get_userdata( $user_id ) ) ) {
$error = array(
'text' => sprintf( __( '%s has taken over and is currently editing.' ), $user->display_name )
);
if ( $avatar = get_avatar( $user->ID, 64 ) ) {
if ( preg_match( "|src='([^']+)'|", $avatar, $matches ) )
$error['avatar_src'] = $matches[1];
}
$send['lock_error'] = $error;
} else {
if ( $new_lock = wp_set_post_lock( $post_id ) )
$send['new_lock'] = implode( ':', $new_lock );
}
$response['wp-refresh-post-lock'] = $send;
}
return $response;
}
add_filter( 'heartbeat_received', 'wp_refresh_post_lock', 10, 3 );
/**
* Check nonce expiration on the New/Edit Post screen and refresh if needed
*
* @since 3.6.0
*/
function wp_refresh_post_nonces( $response, $data, $screen_id ) {
if ( array_key_exists( 'wp-refresh-post-nonces', $data ) ) {
$received = $data['wp-refresh-post-nonces'];
$response['wp-refresh-post-nonces'] = array( 'check' => 1 );
if ( ! $post_id = absint( $received['post_id'] ) )
return $response;
if ( ! current_user_can( 'edit_post', $post_id ) || empty( $received['post_nonce'] ) )
return $response;
if ( 2 === wp_verify_nonce( $received['post_nonce'], 'update-post_' . $post_id ) ) {
$response['wp-refresh-post-nonces'] = array(
'replace' => array(
'getpermalinknonce' => wp_create_nonce('getpermalink'),
'samplepermalinknonce' => wp_create_nonce('samplepermalink'),
'closedpostboxesnonce' => wp_create_nonce('closedpostboxes'),
'_ajax_linking_nonce' => wp_create_nonce( 'internal-linking' ),
'_wpnonce' => wp_create_nonce( 'update-post_' . $post_id ),
),
'heartbeatNonce' => wp_create_nonce( 'heartbeat-nonce' ),
);
}
}
return $response;
}
add_filter( 'heartbeat_received', 'wp_refresh_post_nonces', 10, 3 );
/**
* Disable suspension of Heartbeat on the Add/Edit Post screens.
*
* @since 3.8.0
*
* @param array $settings An array of Heartbeat settings.
* @return array Filtered Heartbeat settings.
*/
function wp_heartbeat_set_suspension( $settings ) {
global $pagenow;
if ( 'post.php' === $pagenow || 'post-new.php' === $pagenow ) {
$settings['suspension'] = 'disable';
}
return $settings;
}
add_filter( 'heartbeat_settings', 'wp_heartbeat_set_suspension' );
/**
* Autosave with heartbeat
*
* @since 3.9.0
*/
function heartbeat_autosave( $response, $data ) {
if ( ! empty( $data['wp_autosave'] ) ) {
$saved = wp_autosave( $data['wp_autosave'] );
if ( is_wp_error( $saved ) ) {
$response['wp_autosave'] = array( 'success' => false, 'message' => $saved->get_error_message() );
} elseif ( empty( $saved ) ) {
$response['wp_autosave'] = array( 'success' => false, 'message' => __( 'Error while saving.' ) );
} else {
/* translators: draft saved date format, see http://php.net/date */
$draft_saved_date_format = __( 'g:i:s a' );
/* translators: %s: date and time */
$response['wp_autosave'] = array( 'success' => true, 'message' => sprintf( __( 'Draft saved at %s.' ), date_i18n( $draft_saved_date_format ) ) );
}
}
return $response;
}
// Run later as we have to set DOING_AUTOSAVE for back-compat
add_filter( 'heartbeat_received', 'heartbeat_autosave', 500, 2 );
/**
* Disables autocomplete on the 'post' form (Add/Edit Post screens) for WebKit browsers,
* as they disregard the autocomplete setting on the editor textarea. That can break the editor
* when the user navigates to it with the browser's Back button. See #28037
*
* @since 4.0
*/
function post_form_autocomplete_off() {
global $is_safari, $is_chrome;
if ( $is_safari || $is_chrome ) {
echo ' autocomplete="off"';
}
}
add_action( 'post_edit_form_tag', 'post_form_autocomplete_off' );
/**
* Remove single-use URL parameters and create canonical link based on new URL.
*
* Remove specific query string parameters from a URL, create the canonical link,
* put it in the admin header, and change the current URL to match.
*
* @since 4.2.0
*/
function wp_admin_canonical_url() {
$removable_query_args = array(
'message', 'settings-updated', 'saved',
'update', 'updated', 'activated',
'activate', 'deactivate', 'locked',
'deleted', 'trashed', 'untrashed',
'enabled', 'disabled', 'skipped',
'spammed', 'unspammed',
);
/**
* Filter the list of URL parameters to remove.
*
* @since 4.2.0
*
* @param array $removable_query_args An array of parameters to remove from the URL.
*/
$removable_query_args = apply_filters( 'removable_query_args', $removable_query_args );
if ( empty( $removable_query_args ) ) {
return;
}
// Ensure we're using an absolute URL.
$current_url = set_url_scheme( 'http://' . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'] );
$filtered_url = remove_query_arg( $removable_query_args, $current_url );
?>
<link id="wp-admin-canonical" rel="canonical" href="<?php echo esc_url( $filtered_url ); ?>" />
<script>
if ( window.history.replaceState ) {
window.history.replaceState( null, null, document.getElementById( 'wp-admin-canonical' ).href + window.location.hash );
}
</script>
<?php
}
add_action( 'admin_head', 'wp_admin_canonical_url' );