in_the_loop(): bool

Determines whether the caller is in the Loop.


For more information on this and similar theme functions, check out the Conditional Tags article in the Theme Developer Handbook.

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bool True if caller is within loop, false if loop hasn't started or ended.

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File: wp-includes/query.php. View all references

function in_the_loop() {
	global $wp_query;

	if ( ! isset( $wp_query ) ) {
		return false;

	return $wp_query->in_the_loop;

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Version Description
2.0.0 Introduced.

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User Contributed Notes

  1. Skip to note 1 content
    Contributed by Codex

    Modify Single Post Entry Titles

    For use in your functions file, this code example enables you to modify the default output of your entry titles.

    function wpdocs_modify_single_post_entry_titles( $title ) {
    	if ( is_singular( 'post' ) && in_the_loop() ) {
    		/* Modify $title */
    	return $title;
    add_filter( 'the_title', 'wpdocs_modify_single_post_entry_titles' );

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