WordPress at a glance
function is not described

WP_Image_Editor_GD::crop() public WP 3.5.0

Crops Image.

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

No Hooks.

Return

true/false/WP_Error.

Usage

$WP_Image_Editor_GD = new WP_Image_Editor_GD();
$WP_Image_Editor_GD->crop( $src_x, $src_y, $src_w, $src_h, $dst_w, $dst_h, $src_abs );
$src_x(int) (required)
The start x position to crop from.
$src_y(int) (required)
The start y position to crop from.
$src_w(int) (required)
The width to crop.
$src_h(int) (required)
The height to crop.
$dst_w(int)
The destination width.
Default: null
$dst_h(int)
The destination height.
Default: null
$src_abs(true/false)
If the source crop points are absolute.
Default: false

Changelog

Since 3.5.0 Introduced.

Code of WP_Image_Editor_GD::crop() WP 5.5.1

<?php
public function crop( $src_x, $src_y, $src_w, $src_h, $dst_w = null, $dst_h = null, $src_abs = false ) {
	// If destination width/height isn't specified,
	// use same as width/height from source.
	if ( ! $dst_w ) {
		$dst_w = $src_w;
	}
	if ( ! $dst_h ) {
		$dst_h = $src_h;
	}

	$dst = wp_imagecreatetruecolor( $dst_w, $dst_h );

	if ( $src_abs ) {
		$src_w -= $src_x;
		$src_h -= $src_y;
	}

	if ( function_exists( 'imageantialias' ) ) {
		imageantialias( $dst, true );
	}

	imagecopyresampled( $dst, $this->image, 0, 0, $src_x, $src_y, $dst_w, $dst_h, $src_w, $src_h );

	if ( is_resource( $dst ) ) {
		imagedestroy( $this->image );
		$this->image = $dst;
		$this->update_size();
		return true;
	}

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