get_page_of_comment( int $comment_id, array $args = array() ): int|null

Compatibility

Present in every tracked release (6.7.7 to 7.1.0), and compiles on PHP 7.4 through 8.6-dev.

Parameters

$comment_idint

Comment ID.

$argsarrayoptional

Array of optional arguments.Default: array()

• $typestringdefault: 'all'

  Limit paginated comments to those matching a given type. Accepts 'comment', 'trackback', 'pingback', 'pings' (trackbacks and pingbacks), or 'all'.

• $per_pageint

  Per-page count to use when calculating pagination. Defaults to the value of the 'comments_per_page' option.

• $max_depthint|string

  If greater than 1, comment page will be determined for the top-level parent $comment_id. Defaults to the value of the 'thread_comments_depth' option.

Return value

int|null

Comment page number or null on error.

Performance profile

How much work a call to get_page_of_comment() does, and what it touches: the algorithmic scaling, the Zend instruction count per call across PHP versions, the hooks it hands control to, and the core code that calls it. Measured from the compiled opcodes, not a stopwatch, so every number is identical on any machine running the same PHP version, and every function in core is ranked by cost.

Cost class

Heavy

Reaches the database via ->query().

Scaling

Constant

No loop in the body: the same number of instructions runs whatever you pass in.

Instructions

10–124

Executed per call on PHP 8.5, depending on the branch taken. The body compiles to 142.

Plugin surface

2 hooks

Third-party callbacks on 'get_page_of_comment_query_args', 'get_page_of_comment' run inside this call, and their cost is not bounded by anything here.

Called by

2

2 places in core call this, so the cost is paid more often than your own code shows.

What it touches

• optionoption read or writeget_option()called directly
• hookthird-party callbacksapply_filters()called directly
• sqldatabase query->query()called directly
• cacheobject cachewp_cache_get()one call below get_page_of_comment()
• serializeserialisationmaybe_unserialize()one call below get_page_of_comment()

Further down the call graph this can also reach transient and query. Those are the worst case, several calls deep and usually down an error path, not what a normal call pays.

What one call costs · 45 distinct outcomes

One number would be a lie: the work depends on which branch runs. These are every distinct cost get_page_of_comment() can have, taken from its control-flow graph on PHP 8.5.

Hooks and filters fired · 2

2 hooks fire while get_page_of_comment() runs, in this order:

1. 1
   apply_filters( get_page_of_comment_query_args )filterline 1149 (+103 into the body)

   Filters the arguments used to query comments in get_page_of_comment().

2. 2
   apply_filters( get_page_of_comment )filterline 1191 (+145 into the body)

   Filters the calculated page on which a comment appears.

Uses · 10

• get_comment()Retrieves comment data given a comment ID or comment object.
• wp_parse_args()Merges user defined arguments into defaults array.
• get_option()Retrieves an option value based on an option name.
• get_query_var()Retrieves the value of a query variable in the WP_Query class.
• get_page_of_comment()Calculates what page number a comment will appear on for comment paging.
• is_user_logged_in()Determines whether the current visitor is a logged in user.
• get_current_user_id()Gets the current user's ID.
• wp_get_unapproved_comment_author_email()Gets unapproved comment author's email.
• apply_filters()Calls the callback functions that have been added to a filter hook.
• WP_Comment_Query::__construct()Constructor.

Used by · 2

• get_comment_link()Retrieves the link to a given comment.
• get_page_of_comment()Calculates what page number a comment will appear on for comment paging.

Source code

View on Trac ↗View on GitHub ↗

1046function get_page_of_comment( $comment_id, $args = array() ) {1047	global $wpdb;1048 1049	$page = null;1050 1051	$comment = get_comment( $comment_id );1052	if ( ! $comment ) {1053		return null;1054	}1055 1056	$defaults      = array(1057		'type'      => 'all',1058		'page'      => '',1059		'per_page'  => '',1060		'max_depth' => '',1061	);1062	$args          = wp_parse_args( $args, $defaults );1063	$original_args = $args;1064 1065	// Order of precedence: 1. `$args['per_page']`, 2. 'comments_per_page' query_var, 3. 'comments_per_page' option.1066	if ( get_option( 'page_comments' ) ) {1067		if ( '' === $args['per_page'] ) {1068			$args['per_page'] = get_query_var( 'comments_per_page' );1069		}1070 1071		if ( '' === $args['per_page'] ) {1072			$args['per_page'] = get_option( 'comments_per_page' );1073		}1074	}1075 1076	if ( empty( $args['per_page'] ) ) {1077		$args['per_page'] = 0;1078		$args['page']     = 0;1079	}1080 1081	if ( $args['per_page'] < 1 ) {1082		$page = 1;1083	}1084 1085	if ( null === $page ) {1086		if ( '' === $args['max_depth'] ) {1087			if ( get_option( 'thread_comments' ) ) {1088				$args['max_depth'] = get_option( 'thread_comments_depth' );1089			} else {1090				$args['max_depth'] = -1;1091			}1092		}1093 1094		// Find this comment's top-level parent if threading is enabled.1095		if ( $args['max_depth'] > 1 && '0' !== $comment->comment_parent ) {1096			return get_page_of_comment( $comment->comment_parent, $args );1097		}1098 1099		$comment_args = array(1100			'type'       => $args['type'],1101			'post_id'    => $comment->comment_post_ID,1102			'fields'     => 'ids',1103			'count'      => true,1104			'status'     => 'approve',1105			'orderby'    => 'none',1106			'parent'     => 0,1107			'date_query' => array(1108				array(1109					'column' => "$wpdb->comments.comment_date_gmt",1110					'before' => $comment->comment_date_gmt,1111				),1112			),1113		);1114 1115		if ( is_user_logged_in() ) {1116			$comment_args['include_unapproved'] = array( get_current_user_id() );1117		} else {1118			$unapproved_email = wp_get_unapproved_comment_author_email();1119 1120			if ( $unapproved_email ) {1121				$comment_args['include_unapproved'] = array( $unapproved_email );1122			}1123		}1124 1125		/**

Changelog

Introduced in 2.7.0. Unchanged from 6.7.7 through 7.1.0.

1. 6.7.7
2. 6.8.8
3. 6.9.7
4. 7.0.4
5. 7.1.0

Signature, return type and hooks compared across 5 parsed releases.

About this page

Parsed data

Generated from the wordpress-develop 6.9.7 tag, from src/wp-includes/comment.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.

Corrections

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