imageistruecolor
Description
The imageistruecolor of Image for PHP finds whether an image is a truecolor image.
Syntax
imageistruecolor(
GdImage $image
): boolParameters
image
A GdImage object, returned by one of the image creation functions, such as imagecreatetruecolor().
Return
Returns true if the image is truecolor, false otherwise.
Examples
1 · imagecreate
<? $width = 100; $height = 100; $image = imagecreate($width, $height); $return = imageistruecolor($image); var_export($return); ?>
false
2 · imagecreatetruecolor
<? $width = 100; $height = 100; $image = imagecreatetruecolor($width, $height); $return = imageistruecolor($image); var_export($return); ?>
true
3 · imagecreatefromgif
<? $filename = $_SERVER['DOCUMENT_ROOT'] . '/assets/gif/1.gif'; $image = imagecreatefromgif($filename); $return = imageistruecolor($image); var_export($return); ?>
false
4 · imagecreatefromjpeg
<? $filename = $_SERVER['DOCUMENT_ROOT'] . '/assets/jpg/1.jpg'; $image = imagecreatefromjpeg($filename); $return = imageistruecolor($image); var_export($return); ?>
true
5 · imagecreatefrompng
<? $filename = $_SERVER['DOCUMENT_ROOT'] . '/assets/png/1.png'; $image = imagecreatefrompng($filename); $return = imageistruecolor($image); var_export($return); ?>
true
Links
Image
- gd_info
- getimagesize
- getimagesizefromstring
- image_type_to_extension
- image_type_to_mime_type
- imageaffine
- imageaffinematrixconcat
- imageaffinematrixget
- imagealphablending
- imageantialias
- imagearc
- imageavif
- imagebmp
- 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
- imagecreatefromavif
- imagecreatefrombmp
- imagecreatefromgif
- imagecreatefromjpeg
- imagecreatefrompng
- imagecreatefromstring
- imagecreatefromtga
- imagecreatefromwbmp
- imagecreatefromwebp
- imagecreatefromxbm
- imagecreatefromxpm
- imagecreatetruecolor
- imagecrop
- imagecropauto
- imagedashedline
- imagedestroy
- imageellipse
- imagefill
- imagefilledarc
- imagefilledellipse
- imagefilledpolygon
- imagefilledrectangle
- imagefilltoborder
- imagefilter
- imageflip
- imagefontheight
- imagefontwidth
- imageftbbox
- imagefttext
- imagegammacorrect
- imagegetclip
- imagegetinterpolation
- imagegif
- imageinterlace
- imagejpeg
- imagelayereffect
- imageline
- imageloadfont
- imageopenpolygon
- imagepalettecopy
- imagepalettetotruecolor
- imagepng
- imagepolygon
- imagerectangle
- imageresolution
- imagerotate
- imagesavealpha
- imagescale
- imagesetbrush
- imagesetclip
- imagesetinterpolation
- imagesetpixel
- imagesetstyle
- imagesetthickness
- imagesettile
- imagestring
- imagestringup
- imagesx
- imagesy
- imagetruecolortopalette
- imagettfbbox
- imagettftext
- imagetypes
- imagewbmp
- imagewebp
- imagexbm
- iptcembed
- iptcparse
