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wp_insert_attachment() WP 1.0

Insert an attachment.

If you set the 'ID' in the $args parameter, it will mean that you are updating and attempt to update the attachment. You can also set the attachment name or title by setting the key 'post_name' or 'post_title'.

You can set the dates for the attachment manually by setting the 'post_date' and 'post_date_gmt' keys' values.

By default, the comments will use the default settings for whether the comments are allowed. You can close them manually or keep them open by setting the value for the 'comment_status' key.

No Hooks.


Int|WP_Error. The attachment ID on success. The value 0 or WP_Error on failure.


wp_insert_attachment( $args, $file, $parent, $wp_error, $fire_after_hooks );
$args(string|array) (required)
Arguments for inserting an attachment.
Default: false
Parent post ID.
Whether to return a WP_Error on failure.
Default: false
Whether to fire the after insert hooks.
Default: true



Since 2.0.0 Introduced.
Since 4.7.0 Added the $wp_error parameter to allow a WP_Error to be returned on failure.
Since 5.6.0 Added the $fire_after_hooks parameter.

Code of wp_insert_attachment() WP 5.8.1

function wp_insert_attachment( $args, $file = false, $parent = 0, $wp_error = false, $fire_after_hooks = true ) {
	$defaults = array(
		'file'        => $file,
		'post_parent' => 0,

	$data = wp_parse_args( $args, $defaults );

	if ( ! empty( $parent ) ) {
		$data['post_parent'] = $parent;

	$data['post_type'] = 'attachment';

	return wp_insert_post( $data, $wp_error, $fire_after_hooks );

wp_insert (insert in DB)

Attachments (Media files)

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