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@hissy
Created November 7, 2013 11:07
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[WordPress] Add file to media library programmatically
<?php
$file = '/path/to/file.png';
$filename = basename($file);
$upload_file = wp_upload_bits($filename, null, file_get_contents($file));
if (!$upload_file['error']) {
$wp_filetype = wp_check_filetype($filename, null );
$attachment = array(
'post_mime_type' => $wp_filetype['type'],
'post_parent' => $parent_post_id,
'post_title' => preg_replace('/\.[^.]+$/', '', $filename),
'post_content' => '',
'post_status' => 'inherit'
);
$attachment_id = wp_insert_attachment( $attachment, $upload_file['file'], $parent_post_id );
if (!is_wp_error($attachment_id)) {
require_once(ABSPATH . "wp-admin" . '/includes/image.php');
$attachment_data = wp_generate_attachment_metadata( $attachment_id, $upload_file['file'] );
wp_update_attachment_metadata( $attachment_id, $attachment_data );
}
}
@ibabul
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ibabul commented Aug 6, 2020

Life Saver

@ravahdati
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Thanks a lot, your code is very good.

@mintbird
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It's worked on WP 5.6!

@diazoxide
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Not working.

Fatal error: Call to undefined function wp_get_current_user() in /home/username/public_html/wp/wp-includes/capabilities.php on line 424

Run your code on init hook

@tuan-ph
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tuan-ph commented Sep 9, 2021

If you receive the file via method POST like:
$file = (binary)
instead of absolute path like this:
$file = '/path/to/file.png';

You have to use $file['tmp_name'] when calling wp_upload_bits
wp_upload_bits($filename, null, file_get_contents($file['tmp_name']))

The rest of above code works great!
Thanks again.

@SyntaxError843
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wp_insert_attachment has the option to return a WP Error instance on failure set to false by default, it will return a zero instead.

So the check for is_wp_error will always return false unless you supply true as a 4th argument.

wp_insert_attachment( $attachment, $upload_file['file'], $parent_post_id, true )

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