form_option( string $option )
- Since
- 1.5.0
- Source
wp-includes/option.php:584
Parameters
$optionstring- Option name.
Cost profile
Measured from the compiled opcodes, not from a stopwatch. Every number here is identical on any machine that runs the same PHP version, and every function in core is ranked by these figures.
- Cost class
- Moderate
- Scaling
- Constant
- Instructions
- 9
- Plugin surface
- None
- Called by
- 0
Reads stored settings via get_option(), cached per request but not free on a cold cache.
No loop in the body: the same number of instructions runs whatever you pass in.
Executed per call on PHP 8.4. The body compiles to 9.
Nothing here hands control to plugin code.
Nothing in core calls this; the cost is only what you spend yourself.
What it touches
- optionoption read or write
get_option()called directly - hookthird-party callbacks
apply_filters()one call below form_option() - cacheobject cache
wp_cache_get()one call below form_option() - serializeserialisation
maybe_unserialize()one call below form_option()
Further down the call graph this can also reach query and transient — those are the worst case, several calls deep and usually down an error path, not what a normal call pays.
What one call costs · 1 distinct outcome
One number would be a lie: the work depends on which branch runs. These are every distinct cost form_option() can have, taken from its control-flow graph on PHP 8.4.
| When | Instructions | Calls it makes |
|---|---|---|
| always | 9 | get_option()esc_attr() |
Across PHP versions
| PHP | Compiled | Executed | Branches | Notes |
|---|---|---|---|---|
7.4 | 9 | 9 | 0 | Compiles to the same instructions |
8.1 | 9 | 9 | 0 | Compiles to the same instructions |
8.2 | 9 | 9 | 0 | Compiles to the same instructions |
8.3 | 9 | 9 | 0 | Compiles to the same instructions |
8.4 | 9 | 9 | 0 | Compiles to the same instructions |
Oldest PHP that compiles this body: 7.4. An instruction is not a fixed amount of time, so a version with the same count is not necessarily the same speed; what the count rules out is a difference in the work itself.
Uses · 2
- esc_attr()Escaping for HTML attributes.
- get_option()Retrieves an option value based on an option name.
Source
function form_option( $option ) { echo esc_attr( get_option( $option ) );}History
Introduced in 1.5.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
About this page
- Parsed data
- Generated from the wordpress-develop 7.1.0 tag, from
src/wp-includes/option.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.