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PHP Imagegif () Function

Function imagegif()- it is a built-in function in PHP that is used to create a GIF image file from a given image. If the image is made transparent using the imagecolortransparent() function, then the GIF89a image format will be generated, otherwise the GIF87a image format will be generated. 
Syntax:
bool imagegif ($image, $to)
Parameters: this function takes two parameters as above and described below:
  • $image:is returned by one of the image creation functions such as imagecreatetruecolor(). Used to create the size of the image.
  • $to:This parameter is used to set the path of the input image. If it is not set or is NULL, then it will generate a stream of raw images.
Return Value:This function returns True on success or False on error .The following programs illustrate the imagegif() functionin PHP:Program 1:


// Create a new image of the specified size $image = imagecreatetruecolor (500, 300);  
// Set background color $bg = imagecolorallocate ( $image , 255, 255, 255);  
// Set text color $textcolor = imagecolorallocate ( $image , 0, 153, 0);  
// Make background white imagefilledrectangle-method/">rectangle ( $image , 0, 0, 500, 300, $bg );  
// Draw a text line on the image imagestring ( $image , 6, 160, 140, ’GeeksforGeeks’ , $textcolor );  
// Output image to browser header ( ’Content-Type: image / gif’ );  
// Create GIF image imagegif ( $image ); imagedestroy ( $image ); ?>
Output: Program 2:  
// Loading PNG image file $png = imagecreatefrompng ( https://media.engineerforengineer.org/wp-content/uploads/engineerforengineer-9.png );  
// Output image to browser header ( ’Content-Type: image / gif’ );  
// Convert PNG image to GIF image imagegif ( $png ); imagedestroy ( $png ); ?>
Output: Related Articles:
  • PHP | Imagecolorexactalpha() function
  • PHP | Imagecolormatch() Function
  • PHP | Imagecolorexact() function
Link: http://php.net/manual/en/function.imagegif.php

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