Media: Make the `is_gd_image()` function available on front end.
This avoids a fatal error if a plugin calls image creation or editing functions like `wp_imagecreatetruecolor()` outside of the admin. Follow-up to [48798] Props BackuPs. Fixes #51174. See #50833. git-svn-id: https://develop.svn.wordpress.org/trunk@48905 602fd350-edb4-49c9-b593-d223f7449a82
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@ -912,29 +912,6 @@ function file_is_displayable_image( $path ) {
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return apply_filters( 'file_is_displayable_image', $result, $path );
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}
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/**
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* Determines whether the value is an acceptable type for GD image functions.
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*
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* In PHP 8.0, the GD extension uses GdImage objects for its data structures.
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* This function checks if the passed value is either a resource of type `gd`
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* or a GdImage object instance. Any other type will return false.
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*
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* @since 5.6.0
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*
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* @param resource|GdImage|false $image A value to check the type for.
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* @return bool True if $image is either a GD image resource or GdImage instance,
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* false otherwise.
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*/
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function is_gd_image( $image ) {
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if ( is_resource( $image ) && 'gd' === get_resource_type( $image )
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|| is_object( $image ) && $image instanceof GdImage
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) {
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return true;
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}
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return false;
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}
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/**
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* Load an image resource for editing.
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*
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@ -3458,6 +3458,29 @@ function get_taxonomies_for_attachments( $output = 'names' ) {
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return $taxonomies;
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}
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/**
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* Determines whether the value is an acceptable type for GD image functions.
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*
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* In PHP 8.0, the GD extension uses GdImage objects for its data structures.
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* This function checks if the passed value is either a resource of type `gd`
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* or a GdImage object instance. Any other type will return false.
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*
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* @since 5.6.0
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*
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* @param resource|GdImage|false $image A value to check the type for.
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* @return bool True if $image is either a GD image resource or GdImage instance,
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* false otherwise.
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*/
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function is_gd_image( $image ) {
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if ( is_resource( $image ) && 'gd' === get_resource_type( $image )
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|| is_object( $image ) && $image instanceof GdImage
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) {
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return true;
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}
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return false;
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}
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/**
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* Create new GD image resource with transparency support
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*
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