wp-admin/includes/class-wp-media-list-table.php:447Handles the checkbox column output.
$itemWP_Post public function column_cb( $item ) { // Restores the more descriptive, specific name for use within this method. $post = $item; if ( current_user_can( 'edit_post', $post->ID ) ) { ?> <input type="checkbox" name="media[]" id="cb-select-<?php echo $post->ID; ?>" value="<?php echo $post->ID; ?>" /> <label for="cb-select-<?php echo $post->ID; ?>"> <span class="screen-reader-text"> <?php /* translators: Hidden accessibility text. %s: Attachment title. */ printf( __( 'Select %s' ), _draft_or_post_title() ); ?> </span> </label> <?php } }Introduced in 4.3.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-admin/includes/class-wp-media-list-table.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.