Finds whether an image is a truecolor image

# imageistruecolor

(PHP 4 >= 4.3.2, PHP 5, PHP 7, PHP 8)

imageistruecolor — Finds whether an image is a truecolor image

### Description

function imageistruecolor(GdImage `$image`): bool

imageistruecolor() finds whether the image `image` is a truecolor image.

### Parameters

`image`
  A GdImage object, returned by one of the image creation functions, such as imagecreatetruecolor().

### Return Values

Returns `true` if the `image` is truecolor, `false` otherwise.

### Changelog

Version | Description
--- | ---
8.0.0 | `image` expects a GdImage instance now; previously, a valid `gd` resource was expected.

### Examples

Example #1 Simple detection of true color image instances using imageistruecolor()

    <?php
    // $im is an image instance

    // Check if image is a true color image or not
    if(!imageistruecolor($im))
    {
        // Create a new true color image instance
        $tc = imagecreatetruecolor(imagesx($im), imagesy($im));

        // Copy over the pixels
        imagecopy($tc, $im, 0, 0, 0, 0, imagesx($im), imagesy($im));

        $im = $tc;
        $tc = NULL;

        // OR use imagepalettetotruecolor()
    }

    // Continue working with image instance
    ?>

### See Also

- imagecreatetruecolor() - Create a new true color image
- imagepalettetotruecolor() - Converts a palette based image to true color

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