wppaste
WordPress

get_the_time( string $format = '', int|WP_Post|null $post = null ): string|int|false

Since
1.5.0
Source
wp-includes/general-template.php:2852
Retrieves the time of the post.

Compatibility

WordPress
since 1.5.0
PHP
7.4–8.6-dev
  • 6.7.7
  • 6.8.8
  • 6.9.7
  • 7.0.4
  • 7.1.0

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

Parameters

$formatstringoptional
Format to use for retrieving the time the post was written. Accepts 'G', 'U', or PHP date format.
Defaults to the 'time_format' option.Default: ''
$postint|WP_Post|nulloptional
Post ID or post object. Default is global $post object.Default: null

Return value

string|int|false
Formatted date string or Unix timestamp if $format is 'U' or 'G'.
False on failure.

Performance profile

How much work a call to get_the_time() 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 get_post().

Scaling
Constant

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

Instructions
8–28

Executed per call on PHP 8.5, depending on the branch taken. The body compiles to 31.

Plugin surface
1 hook

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

Called by
13

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

What it touches

  • querycontent queryget_post()called directly
  • optionoption read or writeget_option()called directly
  • hookthird-party callbacksapply_filters()called directly
  • cacheobject cachewp_cache_get()one call below get_the_time()
  • serializeserialisationmaybe_unserialize()one call below get_the_time()

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

What one call costs · 3 distinct outcomes

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

WhenInstructionsCalls it makes
always8get_post()
!empty($format)26get_post(), get_post_time(), apply_filters()
empty($format)28get_post(), get_option(), get_post_time(), apply_filters()

Across PHP versions

PHPCompiledExecutedBranchesNotes
8.6-dev308–2721 fewer instruction than PHP 8.5
8.5318–282
8.4318–282
8.3318–282
8.2318–282
8.1318–282
7.4318–282

An instruction is not a fixed amount of time, so a matching count is not necessarily the same speed; what it rules out is a difference in the work itself.

Hooks and filters fired · 1

One hook fires while get_the_time() runs, in this order:

  1. apply_filters( get_the_time )filterline 2873 (+21 into the body)

    Filters the time of the post.

Uses · 4

  • get_post()Retrieves post data given a post ID or post object.
  • get_option()Retrieves an option value based on an option name.
  • get_post_time()Retrieves the localized time of the post.
  • apply_filters()Calls the callback functions that have been added to a filter hook.

Used by · 13

Show all 13

Source code

function get_the_time( $format = '', $post = null ) {	$post = get_post( $post ); 	if ( ! $post ) {		return false;	} 	$_format = ! empty( $format ) ? $format : get_option( 'time_format' ); 	$the_time = get_post_time( $_format, false, $post, true ); 	/**	 * Filters the time of the post.	 *	 * @since 1.5.0	 *	 * @param string|int $the_time Formatted date string or Unix timestamp if `$format` is 'U' or 'G'.	 * @param string     $format   Format to use for retrieving the time the post	 *                             was written. Accepts 'G', 'U', or PHP date format.	 * @param WP_Post    $post     Post object.	 */	return apply_filters( 'get_the_time', $the_time, $format, $post );}

Changelog

Introduced in 1.5.0. One change between 6.7.7 and 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.

7.0.4
Parameter $post retyped from int|WP_Post to int|WP_Post|null.verified against source
1.5.0
Introduced.from the docblock

About this page

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Generated from the wordpress-develop 7.0.4 tag, from src/wp-includes/general-template.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.
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