WordPress at a glance
function is not described

WP_Image_Editor_GD::load() public WP 3.5.0

Loads image from $this->file into new GD Resource.

{} It's a method of the class: WP_Image_Editor_GD{}

No Hooks.

Return

true/false/WP_Error. True if loaded successfully; WP_Error on failure.

Usage

$WP_Image_Editor_GD = new WP_Image_Editor_GD();
$WP_Image_Editor_GD->load();

Changelog

Since 3.5.0 Introduced.

Code of WP_Image_Editor_GD::load() WP 5.5.1

<?php
public function load() {
	if ( $this->image ) {
		return true;
	}

	if ( ! is_file( $this->file ) && ! preg_match( '|^https?://|', $this->file ) ) {
		return new WP_Error( 'error_loading_image', __( 'File doesn&#8217;t exist?' ), $this->file );
	}

	// Set artificially high because GD uses uncompressed images in memory.
	wp_raise_memory_limit( 'image' );

	$this->image = @imagecreatefromstring( file_get_contents( $this->file ) );

	if ( ! is_resource( $this->image ) ) {
		return new WP_Error( 'invalid_image', __( 'File is not an image.' ), $this->file );
	}

	$size = @getimagesize( $this->file );
	if ( ! $size ) {
		return new WP_Error( 'invalid_image', __( 'Could not read image size.' ), $this->file );
	}

	if ( function_exists( 'imagealphablending' ) && function_exists( 'imagesavealpha' ) ) {
		imagealphablending( $this->image, false );
		imagesavealpha( $this->image, true );
	}

	$this->update_size( $size[0], $size[1] );
	$this->mime_type = $size['mime'];

	return $this->set_quality();
}