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  1. imagecolorset (PHP 4, PHP 5, PHP 7, PHP 8) imagecolorset — Set the color for the specified palette index

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  3. The function modifies the color of a specific palette index in palette-based images. This is particularly useful for creating flood-fill-like effects where you want to change all pixels of a particular color to a new color.

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  5. imagecolorset Supported Versions: PHP 4, PHP 5, PHP 7, PHP 8 Set the color for the specified palette index

  6. This sets the specified index in the palette to the specified color. This is useful for creating flood-fill-like effects in palleted images without the overhead of performing the actual flood-fill.

  7. Sep 7, 2025 · imagecolorset (PHP 4, PHP 5, PHP 7, PHP 8) imagecolorset — Set the color for the specified palette index