is_gd_image( resource|GdImage|false $image ): bool

Description

Parameters

$imageresource|GdImage|false

A value to check the type for.

Return

bool

True if $image is either a GD image resource or a GdImage instance, false otherwise.

Used by · 13

• WP_Image_Editor_GD::_resize()
• WP_Image_Editor_GD::crop()Crops Image.
• WP_Image_Editor_GD::flip()Flips current image.
• WP_Image_Editor_GD::load()Loads image from $this->file into new GD Resource.
• WP_Image_Editor_GD::resize()Resizes current image.
• WP_Image_Editor_GD::rotate()Rotates current image counter-clockwise by $angle.
• _crop_image_resource()Crops an image resource. Internal use only.
• _flip_image_resource()Flips an image resource. Internal use only.
• _rotate_image_resource()Returns an image resource. Internal use only.
• image_edit_apply_changes()Performs group of changes on Editor specified.
• load_image_to_edit()Loads an image resource for editing.
• wp_imagecreatetruecolor()Creates a new GD image resource with transparency support.

Source

View on Trac ↗View on GitHub ↗

4151function is_gd_image( $image ) {4152	if ( $image instanceof GdImage // @phpstan-ignore class.notFound (Only available with PHP8+.)4153		|| is_resource( $image ) && 'gd' === get_resource_type( $image )4154	) {4155		return true;4156	}4157 4158	return false;4159}

History

Introduced in 5.6.0. Unchanged from 6.7.7 through 7.1.0.

1. 6.7.7
2. 6.8.8
3. 6.9.7
4. 7.0.4
5. 7.1.0

Signature, return type and hooks compared across 5 parsed releases.

About this page

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