imagecolortransparent

Function • Params and return types changed in PHP 8.0

Define a color as transparent.

PHP 5
PHP 7
PHP 8.0
Improved
PHP 8.1
PHP 8.2-8.3
PHP 8.4
PHP 8.5
PHP 8.6

imagecolortransparent Function synopsis

imagecolortransparent(GdImage $image, ?int $color = null): int

Parameters

$image

TypeGdImage

$color

OptionalType?intDefault valuenull

A color identifier created with imagecolorallocate.

Return value

Typeint

The identifier of the new (or current, if none is specified) transparent color is returned. If $color is null, and the image has no transparent color, the returned identifier will be -1.

Changes to the imagecolortransparent Function

PHP 8.0

  • Return type added: int
  • Parameter name of parameter #1 changed: $im to $image
  • Parameter type added for parameter #1 ($image): GdImage
  • Parameter name of parameter #2 changed: $col to $color
  • Parameter type added for parameter #2 ($color): ?int
  • Parameter default value added for position #2 ($color): null
- imagecolortransparent($im, $col)
+ imagecolortransparent(GdImage $image, ?int $color = null): int

imagecolortransparent Function Availability

PHP VersionAvailability
PHP 8.6Upcoming Release Yes
PHP 8.5Supported (Latest) Yes
PHP 8.4Supported Yes
PHP 8.3Security-Fixes Only Yes
PHP 8.2Security-Fixes Only Yes
PHP 8.1Unsupported Yes
PHP 8.0Unsupported Yes
PHP 7.4Unsupported Yes
PHP 7.3Unsupported Yes
PHP 7.2Unsupported Yes
PHP 7.1Unsupported Yes
PHP 7.0Unsupported Yes
PHP 5.6Unsupported Yes
PHP 5.5Unsupported Yes
PHP 5.4Unsupported Yes
PHP 5.3Unsupported Yes