This example can be used for graphics to xpm to PHP_GTK use, but we first look at this simple code, first understand the principle, said xpm probably few know, had to rewrite into this paradigm. The graphics turn to ASCII.
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# # Convert Map file
$Pic = "jerry.jpg" ;
# # to convert the string
$Ascii = "#" ;
$ImageSize=getimagesize($Pic );
If (is_array($ImageSize )):
$Width =$ImageSize[0]; # # Get width
$Height =$ImageSize[1]; # # Get length
Switch ($ImageSize[2]): # # judgment format, because 4 is SWF, so it's not written out
case ' 1 ' :
If (imagetypes() & img_gif ):
$img=imagecreatefromgif($Pic );
Else:
Exit ("system does not support GIF format map" );
EndIf;
break;
case ' 2 ' :
If (imagetypes() & img_jpg ):
$img=imagecreatefromjpeg($Pic );
Else:
Exit ("system does not support JPG map files" );
EndIf;
break;
case ' 3 ' :
If (imagetypes() & img_png ):
$img=imagecreatefrompng($Pic );
Else:
Exit (The system does not support PNG format map files) );
EndIf;
break;
Default:
Exit ("System not recognized" );
break;
Endswitch;
For ($y=1; $y <= $Height ; $y ++):
For ($x=1; $x <= $Width ; $x ++):
# # Fetch Point Index
$index = imagecolorat($img,$x , $y );
# # get RGB color
$rgb = imagecolorsforindex($img,$ Index );
# # 255,255,255 (RGB) to FFFFFF (HTML) This format
$color = dechex($rgb[Red]). Dechex ($rgb[Green]). Dechex ($rgb[Blue ]);
Echo "<font color= $color size=1> $Ascii </font>" ;
ENDfor;
Echo "<BR>" ;
ENDfor;
EndIf;
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