get_the_modified_time( string $format = '', int|WP_Post|null $post = null ): string|int|false
- Since
- 2.0.0, 4.6.0
- Source
wp-includes/general-template.php:3039
Compatibility
- WordPress
- since 4.6.0
- 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 modified. Accepts 'G', 'U', or PHP date format.
Defaults to the 'time_format' option.Default:'' $postint|WP_Post|nulloptional- Post ID or WP_Post object. Default current post.Default:
null
Return value
string|int|false- Formatted date string or Unix timestamp. False on failure.
Performance profile
How much work a call to get_the_modified_time() does, and what it touches: the algorithmic scaling, the Zend instruction count per call across PHP versions, the hooks it hands control to, and the core code that calls it. Measured from the compiled opcodes, not a stopwatch, so every number is identical on any machine running the same PHP version, and every function in core is ranked by cost.
- Cost class
- Heavy
- Scaling
- Constant
- Instructions
- 16–28
- Plugin surface
- 1 hook
- Called by
- 5
Reaches the database via get_post().
No loop in the body: the same number of instructions runs whatever you pass in.
Executed per call on PHP 8.5, depending on the branch taken. The body compiles to 32.
Third-party callbacks on 'get_the_modified_time' run inside this call, and their cost is not bounded by anything here.
5 places in core call this, so the cost is paid more often than your own code shows.
What it touches
- querycontent query
get_post()called directly - optionoption read or write
get_option()called directly - hookthird-party callbacks
apply_filters()called directly - cacheobject cache
wp_cache_get()one call below get_the_modified_time() - serializeserialisation
maybe_unserialize()one call below get_the_modified_time()
Further down the call graph this can also reach transient. That is the worst case, several calls deep and usually down an error path, not what a normal call pays.
What one call costs · 3 distinct outcomes
One number would be a lie: the work depends on which branch runs. These are every distinct cost get_the_modified_time() can have, taken from its control-flow graph on PHP 8.5.
| When | Instructions | Calls it makes |
|---|---|---|
| always | 16 | get_post(), apply_filters() |
!empty($format) | 26 | get_post(), get_post_modified_time(), apply_filters() |
empty($format) | 28 | get_post(), get_option(), get_post_modified_time(), apply_filters() |
Across PHP versions
| PHP | Compiled | Executed | Branches | Notes |
|---|---|---|---|---|
| 8.6-dev | 31 | 16–27 | 2 | 1 fewer instruction than PHP 8.5 |
| 8.5 | 32 | 16–28 | 2 | |
| 8.4 | 32 | 16–28 | 2 | |
| 8.3 | 32 | 16–28 | 2 | |
| 8.2 | 32 | 16–28 | 2 | |
| 8.1 | 32 | 16–28 | 2 | |
| 7.4 | 32 | 16–28 | 2 |
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_modified_time() runs, in this order:
- apply_filters( get_the_modified_time )filterline 3062 (+23 into the body)
Filters the localized time a post was last modified.
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_modified_time()Retrieves the time at which the post was last modified.
- apply_filters()Calls the callback functions that have been added to a filter hook.
Used by · 5
- the_modified_time()Displays the time at which the post was last modified.
- twentyfifteen_entry_meta()Prints HTML with meta information for the categories, tags.
- twentynineteen_posted_on()Prints HTML with meta information for the current post-date/time.
- twentyseventeen_time_link()Gets a nicely formatted string for the published date.
- twentysixteen_entry_date()Prints HTML with date information for current post.
Source code
function get_the_modified_time( $format = '', $post = null ) { $post = get_post( $post ); if ( ! $post ) { // For backward compatibility, failures go through the filter below. $the_time = false; } else { $_format = ! empty( $format ) ? $format : get_option( 'time_format' ); $the_time = get_post_modified_time( $_format, false, $post, true ); } /** * Filters the localized time a post was last modified. * * @since 2.0.0 * @since 4.6.0 Added the `$post` parameter. * * @param string|int|false $the_time The formatted time or false if no post is found. * @param string $format Format to use for retrieving the time the post * was modified. Accepts 'G', 'U', or PHP date format. * @param WP_Post|null $post WP_Post object or null if no post is found. */ return apply_filters( 'get_the_modified_time', $the_time, $format, $post );}Changelog
Introduced in 2.0.0. One change between 6.7.7 and 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
$post retyped from int|WP_Post to int|WP_Post|null.verified against source$post parameter.from the docblockAbout this page
- Parsed data
- 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. - Corrections
- Something wrong on this page? Report it and it gets fixed in the next regeneration.