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Digg  imagetypes
Return the image types supported by this PHP build
(PHP 4 >= 4.0.2, PHP 5)
Example 1027. Checking for PNG support<?phpCode Examples / Notes » imagetypesenyo
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 $aSupportedTypes; } ?> jaldinger
Please note that if only "GIF Read Support" is enabled, the IMG_GIF bit will not be returned (at least on my system: PHP 4.3.0/RH Linux 7.2). To work around this issue, and also the issue that there is no function that can tell me what image format a GD resource ID refers to, I use the following switch statement to map the exif IMAGETYPE_* constants to the GD IMG_* constants: switch (exif_imagetype($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. thundercrew
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) } jocke
I wrote this function that returns an array with the supported image types <?php function getSupportedImageTypes() { $aSupportedTypes = array(); $aPossibleImageTypeBits = array( "IMG_GIF", "IMG_JPG", "IMG_PNG", "IMG_WBMP" ); foreach ($aPossibleImageTypeBits as $iIndex => $sImageTypeBits) { $sEval = "if ("; $sEval .= "imagetypes() & " . $sImageTypeBits . ""; $sEval .= ") { return TRUE; } else { return FALSE; }"; if (eval($sEval)) { $aSupportedTypes[] = str_replace("IMG_", "", $sImageTypeBits); } } return $aSupportedTypes; } ?> Hope that helps someone :) /Jocke Selin PS, if you know of a better way that doesn't include eval(), please let me know. |
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gd_info getimagesize image_type_to_extension image_type_to_mime_type image2wbmp imagealphablending imageantialias imagearc imagechar imagecharup imagecolorallocate imagecolorallocatealpha imagecolorat imagecolorclosest imagecolorclosestalpha imagecolorclosesthwb imagecolordeallocate imagecolorexact imagecolorexactalpha imagecolormatch imagecolorresolve imagecolorresolvealpha imagecolorset imagecolorsforindex imagecolorstotal imagecolortransparent imageconvolution imagecopy imagecopymerge imagecopymergegray imagecopyresampled imagecopyresized imagecreate imagecreatefromgd2 imagecreatefromgd2part imagecreatefromgd imagecreatefromgif imagecreatefromjpeg imagecreatefrompng imagecreatefromstring imagecreatefromwbmp imagecreatefromxbm imagecreatefromxpm imagecreatetruecolor imagedashedline imagedestroy imageellipse imagefill imagefilledarc imagefilledellipse imagefilledpolygon imagefilledrectangle imagefilltoborder imagefilter imagefontheight imagefontwidth imageftbbox imagefttext imagegammacorrect imagegd2 imagegd imagegif imagegrabscreen imagegrabwindow imageinterlace imageistruecolor imagejpeg imagelayereffect imageline imageloadfont imagepalettecopy imagepng imagepolygon imagepsbbox imagepsencodefont imagepsextendfont imagepsfreefont imagepsloadfont imagepsslantfont imagepstext imagerectangle imagerotate imagesavealpha imagesetbrush imagesetpixel imagesetstyle imagesetthickness imagesettile imagestring imagestringup imagesx imagesy imagetruecolortopalette imagettfbbox imagettftext imagetypes imagewbmp imagexbm iptcembed iptcparse jpeg2wbmp png2wbmp |
