imagerectangle() Drawing of rectangles line images using gd support in PHP

imagerectangle($image,$x1,$y1,$x2,$y2,$color)

`$image`	Image created using ImageCreate() or imagecreatetruecolor()
`$x1`	Upper left ( X : Horizontal ) coordinate of the rectangle
`$y1`	Upper left ( Y : Vertical ) coordinate of the rectangle
`$x2`	Bottom right ( X : Horizontal ) coordinate of the rectangle
`$y2`	Bottom right ( Y : Vertical ) coordinate of the rectangle
`$color`	Color of the borders by using imagecolorallocate().

Drawing rectangles & patterns using different thickness and colours using imagerectangle() in PHP GD

Note that the canvas starts from 0,0 position. So to add border around one image we have to leave one pixel from the right and bottom edges.

header ("Content-type: image/jpeg");
$im = @ImageCreate (200, 200) 
or die ("Cannot Initialize new GD image stream");

$background_color = ImageColorAllocate ($im, 255, 255, 128);
$text_color = ImageColorAllocate ($im, 255, 0, 0);

imagerectangle ($im,0,0,199,199,$text_color);
//imagerectangle ($im,0,0,200,200,$text_color);


Imagejpeg ($im);
imagedestroy($im); //memory is removed.


imagerectangle ($im,0,0,199,199,$text_color);	imagerectangle ($im,0,0,200,200,$text_color);

Example 1

Draw one rectangle using red colour.
Rectangle in red

header ("Content-type: image/jpeg");
$im = @ImageCreate (200, 200) 
or die ("Cannot Initialize new GD image stream");

$background_color = ImageColorAllocate ($im, 255, 255, 128);
$text_color = ImageColorAllocate ($im, 255, 0, 0); // red 

imagerectangle ($im,20,20,100,100,$text_color);

Imagejpeg ($im);
imagedestroy($im); //memory is removed.

Using two rectangles by changing colour

header ("Content-type: image/jpeg");
$im = @ImageCreate (200, 200) 
or die ("Cannot Initialize new GD image stream");

$background_color = ImageColorAllocate ($im, 255, 255, 128);
$text_color = ImageColorAllocate ($im, 255, 0, 0); // red 

imagerectangle ($im,20,20,100,100,$text_color);

$text_color = ImageColorAllocate ($im, 0, 0, 255); // blue
imagerectangle ($im,50,50,150,150,$text_color);

Imagejpeg ($im);
imagedestroy($im); //memory is removed.

Thickness of lines and generating patterns

By changing the value of $gap the gap between the rectangles can be changed. We used imagesetthickness() to change the thickness of the rectangles. Patterns of rectangles

header ("Content-type: image/jpeg");
$im = @ImageCreate (601, 601) // added one pixel for border
or die ("Cannot Initialize new GD image stream");
$gap=10; // change this value to increase the lines 
$background_color = ImageColorAllocate ($im, 255, 255, 255);
$text_color = ImageColorAllocate ($im, 128, 255, 136);
imagesetthickness($im, 2);// thickness is changed
for($i=0;$i<=600;$i +=$gap){
imagerectangle ($im,$i,$i,(600-$i),(600-$i),$text_color);
}

Imagejpeg ($im);
imagedestroy($im); //memory is removed.

Changing colour of patterns

header ("Content-type: image/jpeg");
$im = @ImageCreate (601, 601) // added one pixel for border
or die ("Cannot Initialize new GD image stream");
$gap=10; // change this value to increase the lines 
$background_color = ImageColorAllocate ($im, 255, 255, 255);
$text_color = ImageColorAllocate ($im, 128, 255, 136);
imagesetthickness($im, 2);// thickness is changed
for($i=0;$i<=600;$i +=$gap){
$r=rand(1,255);
$g=rand(1,255);
$b=rand(1,255);
$text_color = ImageColorAllocate ($im, $r, $g, $b);	
imagerectangle ($im,$i,$i,(600-$i),(600-$i),$text_color);
}

Imagejpeg ($im);
imagedestroy($im); //memory is removed.

GD functions GD imagearc()

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imagerectangle(): Rectangles using PHP GD

Example 1

Using two rectangles by changing colour

Thickness of lines and generating patterns

Changing colour of patterns

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