imagecolorresolvealpha

Function • Params and return types changed in PHP 8.0

Get the index of the specified color + alpha or its closest possible alternative.

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

imagecolorresolvealpha Function synopsis

imagecolorresolvealpha(
    GdImage $image,
    int $red,
    int $green,
    int $blue,
    int $alpha
  ): int

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

Returns a color index.

Changes to the imagecolorresolvealpha 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 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
  imagecolorresolvealpha(
-     $im,
+     GdImage $image,
-     $red,
+     int $red,
-     $green,
+     int $green,
-     $blue,
+     int $blue,
-     $alpha
+     int $alpha
-   )
+   ): int

imagecolorresolvealpha 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