wp_import_upload_form( string $action )
- Since
- 2.0.0
- Source
wp-admin/includes/template.php:998
Compatibility
- WordPress
- since 2.0.0
- 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
$actionstring- The action attribute for the form.
Performance profile
How much work a call to wp_import_upload_form() does, and what it touches: the algorithmic scaling, the Zend instruction count per call across PHP versions, the hooks it hands control to, and the core code that calls it. Measured from the compiled opcodes, not a stopwatch, so every number is identical on any machine running the same PHP version, and every function in core is ranked by cost.
- Cost class
- Trivial
- Scaling
- Constant
- Instructions
- 31–54
- Plugin surface
- 1 hook
- Called by
- 0
Touches nothing outside its own arguments.
No loop in the body: the same number of instructions runs whatever you pass in.
Executed per call on PHP 8.5, depending on the branch taken. The body compiles to 68.
Third-party callbacks on 'import_upload_size_limit' run inside this call, and their cost is not bounded by anything here.
Nothing in core calls this; the cost is only what you spend yourself.
What it touches
- hookthird-party callbacks
apply_filters()called directly
Further down the call graph this can also reach option, cache, serialize, query and transient. Those are the worst case, several calls deep and usually down an error path, not what a normal call pays.
What one call costs · 2 distinct outcomes
One number would be a lie: the work depends on which branch runs. These are every distinct cost wp_import_upload_form() can have, taken from its control-flow graph on PHP 8.5.
| When | Instructions | Calls it makes |
|---|---|---|
!empty($upload_dir) | 31 | wp_max_upload_size(), apply_filters(), size_format(), wp_upload_dir(), __(), wp_admin_notice() |
empty($upload_dir) | 54 | wp_max_upload_size(), apply_filters(), size_format(), wp_upload_dir(), wp_nonce_url(), esc_url(), __(), __(), sprintf(), printf(), __(), submit_button() |
Across PHP versions
| PHP | Compiled | Executed | Branches | Notes |
|---|---|---|---|---|
| 8.6-dev | 69 | 31–55 | 1 | 1 more instruction than PHP 8.5 |
| 8.5 | 68 | 31–54 | 1 | |
| 8.4 | 68 | 31–54 | 1 | |
| 8.3 | 68 | 31–54 | 1 | |
| 8.2 | 68 | 31–54 | 1 | |
| 8.1 | 68 | 31–54 | 1 | |
| 7.4 | 68 | 31–54 | 1 |
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 wp_import_upload_form() runs, in this order:
- apply_filters( import_upload_size_limit )filterline 1009 (+11 into the body)
Filters the maximum allowed upload size for import files.
Uses · 9
- apply_filters()Calls the callback functions that have been added to a filter hook.
- wp_max_upload_size()Determines the maximum upload size allowed in php.ini.
- size_format()Converts a number of bytes to the largest unit the bytes will fit into.
- wp_upload_dir()Returns an array containing the current upload directory's path and URL.
- __()Retrieves the translation of $text.
- wp_admin_notice()Outputs an admin notice.
- esc_url()Checks and cleans a URL.
- wp_nonce_url()Retrieves URL with nonce added to URL query.
- submit_button()Echoes a submit button, with provided text and appropriate class(es).
Source code
function wp_import_upload_form( $action ) { /** * Filters the maximum allowed upload size for import files. * * @since 2.3.0 * * @see wp_max_upload_size() * * @param int $max_upload_size Allowed upload size. Default 1 MB. */ $bytes = apply_filters( 'import_upload_size_limit', wp_max_upload_size() ); $size = size_format( $bytes ); $upload_dir = wp_upload_dir(); if ( ! empty( $upload_dir['error'] ) ) : $upload_directory_error = '<p>' . __( 'Before you can upload your import file, you will need to fix the following error:' ) . '</p>'; $upload_directory_error .= '<p><strong>' . $upload_dir['error'] . '</strong></p>'; wp_admin_notice( $upload_directory_error, array( 'additional_classes' => array( 'error' ), 'paragraph_wrap' => false, ) ); else : ?><form enctype="multipart/form-data" id="import-upload-form" method="post" class="wp-upload-form" action="<?php echo esc_url( wp_nonce_url( $action, 'import-upload' ) ); ?>"><p> <?php printf( '<label for="upload">%s</label> (%s)', __( 'Choose a file from your computer:' ), /* translators: %s: Maximum allowed file size. */ sprintf( __( 'Maximum size: %s' ), $size ) ); ?><input type="file" id="upload" name="import" size="25" /><input type="hidden" name="action" value="save" /><input type="hidden" name="max_file_size" value="<?php echo $bytes; ?>" /></p> <?php submit_button( __( 'Upload file and import' ), 'primary' ); ?></form> <?php endif;}Changelog
Introduced in 2.0.0. 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 6.9.7 tag, from
src/wp-admin/includes/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.