imagecolorallocatealpha

Function • Params and return types changed in PHP 8.0

Allocate a color for an image.

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

imagecolorallocatealpha Function synopsis

imagecolorallocatealpha(
    GdImage $image,
    int $red,
    int $green,
    int $blue,
    int $alpha
  ): int|false

Parameters

$image

TypeGdImage

$red

Typeint

Value of red component.

$green

Typeint

Value of green component.

$blue

Typeint

Value of blue component.

$alpha

Typeint

A value between 0 and 127. 0 indicates completely opaque while 127 indicates completely transparent.

Return value

Typeint|false

A color identifier or false if the allocation failed.

Changes to the imagecolorallocatealpha Function

PHP 8.0

  • Return type added: int|false
  • Parameter name of parameter #1 changed: $im to $image
  • Parameter type added for parameter #1 ($image): GdImage
  • Parameter type added for parameter #2 ($red): int
  • Parameter type added for parameter #3 ($green): int
  • Parameter type added for parameter #4 ($blue): int
  • Parameter type added for parameter #5 ($alpha): int
  imagecolorallocatealpha(
-     $im,
+     GdImage $image,
-     $red,
+     int $red,
-     $green,
+     int $green,
-     $blue,
+     int $blue,
-     $alpha
+     int $alpha
-   )
+   ): int|false

imagecolorallocatealpha 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