imageconvolution

Function • Params and return types changed in PHP 8.0

Apply a 3x3 convolution matrix, using coefficient and offset.

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

imageconvolution Function synopsis

imageconvolution(
    GdImage $image,
    array $matrix,
    float $divisor,
    float $offset
  ): bool

Parameters

$image

TypeGdImage

$matrix

Typearray

A 3x3 matrix: an array of three arrays of three floats.

$divisor

Typefloat

The divisor of the result of the convolution, used for normalization.

$offset

Typefloat

Color offset.

Return value

Typebool

Returns true on success, false on failure

Changes to the imageconvolution Function

PHP 8.0

  • Return type added: bool
  • Parameter name of parameter #1 changed: $im to $image
  • Parameter type added for parameter #1 ($image): GdImage
  • Parameter name of parameter #2 changed: $matrix3x3 to $matrix
  • Parameter type added for parameter #2 ($matrix): array
  • Parameter name of parameter #3 changed: $div to $divisor
  • Parameter type added for parameter #3 ($divisor): float
  • Parameter type added for parameter #4 ($offset): float
  imageconvolution(
-     $im,
+     GdImage $image,
-     $matrix3x3,
+     array $matrix,
-     $div,
+     float $divisor,
-     $offset
+     float $offset
-   )
+   ): bool

imageconvolution 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