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function is not described

WP_Image_Editor_GD::resize() public WP 3.5.0

Resizes current image. Wraps _resize, since _resize returns a GD Resource.

At minimum, either a height or width must be provided. If one of the two is set to null, the resize will maintain aspect ratio according to the provided dimension.

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

No Hooks.

Return

true/WP_Error.

Usage

$WP_Image_Editor_GD = new WP_Image_Editor_GD();
$WP_Image_Editor_GD->resize( $max_w, $max_h, $crop );
$max_w(int/null) (required)
Image width.
$max_h(int/null) (required)
Image height.
$crop(true/false)

Default: false

Changelog

Since 3.5.0 Introduced.

Code of WP_Image_Editor_GD::resize() WP 5.5.1

<?php
public function resize( $max_w, $max_h, $crop = false ) {
	if ( ( $this->size['width'] == $max_w ) && ( $this->size['height'] == $max_h ) ) {
		return true;
	}

	$resized = $this->_resize( $max_w, $max_h, $crop );

	if ( is_resource( $resized ) ) {
		imagedestroy( $this->image );
		$this->image = $resized;
		return true;

	} elseif ( is_wp_error( $resized ) ) {
		return $resized;
	}

	return new WP_Error( 'image_resize_error', __( 'Image resize failed.' ), $this->file );
}