PHP 7.0.6 Released

    imagetypes

    (PHP 4 >= 4.0.2, PHP 5, PHP 7)

    imagetypes — Return the image types supported by this PHP build

    Description

    int imagetypes ( void )

    Returns the image types supported by the current PHP installation.

    Return Values

    Returns a bit-field corresponding to the image formats supported by the version of GD linked into PHP. The following bits are returned, IMG_GIF | IMG_JPG | IMG_PNG | IMG_WBMP | IMG_XPM.

    Examples

    Example #1 Checking for PNG support

    <?php
    if (imagetypes() & IMG_PNG) {
        echo     "PNG Support is enabled";
    }
    ?>

    User Contributed Notes

    ThunderCrew
    8 years ago
    Im not a smart man but this seemd to be the simplest code and it worked.
    Its at the very top of this directory.

    <?php
    var_dump    (gd_info());
    ?>

    Returned image info and more.

    array(11) { ["GD Version"]=> string(27) "bundled (2.0.28 compatible)" ["FreeType Support"]=> bool(true) ["FreeType Linkage"]=> string(13) "with freetype" ["T1Lib Support"]=> bool(false) ["GIF Read Support"]=> bool(true) ["GIF Create Support"]=> bool(true) ["JPG Support"]=> bool(true) ["PNG Support"]=> bool(true) ["WBMP Support"]=> bool(true) ["XBM Support"]=> bool(true) ["JIS-mapped Japanese Font Support"]=> bool(false) }
    enyo
    12 years ago
    Why not use this function?

    <?php
    function getSupportedImageTypes() {
            $aSupportedTypes = array();

            $aPossibleImageTypeBits = array(
                IMG_GIF=>'GIF',
                IMG_JPG=>'JPG',
                IMG_PNG=>'PNG',
                IMG_WBMP=>'WBMP'
            );

        foreach (    $aPossibleImageTypeBits as $iImageTypeBits => $sImageTypeString) {
            if (    imagetypes() & $iImageTypeBits) {
                    $aSupportedTypes[] = $sImageTypeString;
            }
        }

        return     $aSupportedTypes;
    }
    ?>
    jaldinger (at) consulturdorado (dot) com
    13 years ago
    Please note that if only "GIF Read Support" is enabled, the
    IMG_GIF bit will not be returned (at least on my system:
    PHP 4.3.0/RH Linux 7.2).

    To work around this issue, and also the issue that there is no
    function that can tell me what image format a GD resource ID
    refers to, I use the following switch statement to map the exif
    IMAGETYPE_* constants to the GD IMG_* constants:

    switch (exif_imagetype($file['tmp_name'])) {
        case IMAGETYPE_GIF:
            $image_type = IMG_GIF;
            break;
        case IMAGETYPE_JPEG:
            $image_type = IMG_JPG;
            break;
        case IMAGETYPE_PNG:
            $image_type = IMG_PNG;
            break;
        case IMAGETYPE_WBMP:
            $image_type = IMG_WBMP;
            break;
         default:
            $image_type = 0;
            break;
    }

    store this value together with the image data in a database
    and later use the following IF statement to see if I can work
    with that image (create a thumbnail, etc...)

    if ($image_type & (imagetypes() | IMG_GIF)) {
        return $this->createJpegThumbailFromString($data, 46, 27);
    } else {
        return file_get_contents($_SERVER['DOCUMENT_ROOT'] .
            '/gfx/no-thumbnail.jpg');
    }

    HTH anybody...

    Joerg.
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