PHP Imagechar() Function

Imagechar ( ) function is another inbuilt PHP function mainly used to draw a horizontal character. The function works using the x and y-axis, used to set coordinates for the starting point from where the picture has to be drawn. The origin coordinates ( 0, 0 ) are in the browsing window's top-left corner. We can set the coordinates accordingly from the origin to get the resulting picture according to our needs.

Syntax

S.No	Parameter	Description	Optional / mandatory
1	$ image	This parameter is used to define the size of the image we want to display. This parameter is used by an image resource like the imagecreatetruecolor( ) function, which returns an image source.	Mandatory
2	$ font	This parameter is used to define the font size of the character we want to display. It is used as numeric 1, 2, 3 . . . the higher the number, the large the font, and vice a verse.	optional
3	$ x	This parameter is used to set the desired image's x-coordinates. Starting from the origin	Mandatory
4	$ y	This parameter is used to set the desired image's y-coordinates. Starting from the origin	Mandatory
5	$ c	This parameter is used to define the character, which will be printed	Mandatory
6	$ color	This parameter is used to define the color of the image. This parameter is used for creating a color identifies like the imagecolorallocate( ) function	optional

The image char( ) function returns TRUE on successful execution of the program and FALSE on a failed attempt.

Examples of imagechar( ) Function

Example 1: PHP program to display the basic use of imagechar( ) function

<!DOCTYPEhtml>
<html lang= " en ">
<head>
  <meta charse t= " UTF - 8 ">
  <meta http ? equiv= " X - UA - Compatible " content = " IE = edge ">
  <meta name = " viewport " content = " width = device - width, initial - scale = 1 .0">
  <title> PHP </title>
</head>
<body>
<? php
// to define the size of the image
$image = imagecreate(100, 100);
// to define the string we want to display
$string = 'PHP';
// to define the background color of the image
$background-color = imagecolorallocate($image, 255, 255, 255);
// to define the text color of the image
$text-color = imagecolorallocate($image, 0, 0, 0);
// imagechar function to display a black P on top right corner
Imagechar($image, 1, 0, 0, $string, $text-color);
header('Content - type: image/png');
imagepng($image);  
?>
</body>
</html>

Output

The above PHP code gives the following output:

Here in this program, we have declared various variables like $image to define the size of the image that we require, $background color to define the color of background we require, $text color to define the color of text we require. We have used the string ( ) function to declare the string we want to display as an image. To display the output of the image, we have used an inbuilt PHP command header and imagepng to display on the browser.

Example 2: PHP program to display the use of imagechar( ) function

<!DOCTYPEhtml>
<html lang= " en ">
<head>
  <meta charse t= " UTF - 8 ">
  <meta http - equiv= " X - UA - Compatible " content = " IE = edge ">
  <meta name = " viewport " content = " width = device - width, initial - scale = 1 .0">
  <title> PHP </title>
</head>
<body>
<? Php
   // to define the size of the image
$image=imagecreate(400,300);
// to define the string we want to display
  $imagestring='PLAY';
// to define the background color of the image
   $background-color=imagecolorallocate($img,0, 152, 0);
// to define the text color of the image
   $text-color=imagecolorallocate($image,255,255,255);
// imagechar function to display a whote P on green background
   imagechar($image,80,100,90, $imagestring, $text-color);
   header('Content-type: image/png');
   imagepng($image);
?>
</body>
</html>

Output

The above code gives the following output.

Here in this program, we have declared various variables like $image to define the size of the image that we require, $background color to define the color of background we require, $text color to define the color of text we require. We have used the image string ( ) function to declare the string we want to display as an image. To display the output of the image, we have used an inbuilt PHP command header and imagepng to display on the browser.

Example 3: PHP program to display the use of imagechar( ) function

<!DOCTYPEhtml>
<html lang= " en ">
<head>
  <meta charse t= " UTF - 8 ">
  <meta http ? equiv= " X - UA - Compatible " content = " IE = edge ">
  <meta name = " viewport " content = " width = device - width, initial - scale = 1 .0">
  <title> PHP </title>
</head>
<body>
<? Php
   // to define the size of the image
$image= imagecreate(400, 300);
// to define the string we want to display
$imagestring= 'HELLO WORLD'; 
// to define the background color of the image
$background-color= imagecolorallocate($image, 0, 151, 0); 
// to define the text color of the image
$text-color= imagecolorallocate($image, 255, 255, 255); 
// imagechar function to display a white H in center
imagechar($image, 5, 190, 150, $imagestring, $text-color);
header('Content-type: image/png');
imagepng($image);
?>
</body>
</html>

Output

The above PHP code gives the following output.

Here in this program, we have declared various variables like $image to define the size of the image that we require, $background color to define the color of background we require, $text color to define the color of text we require. We have used the image string ( ) function to declare the string we want to display as an image. To display the output of the image, we have used an inbuilt PHP command header and imagepng to display on the browser.

Example 4: PHP program to display the use of imagechar( ) function

<!DOCTYPEhtml>
<html lang= " en ">
<head>
  <meta charse t= " UTF - 8 ">
  <meta http - equiv= " X - UA - Compatible " content = " IE = edge ">
  <meta name = " viewport " content = " width = device - width, initial - scale = 1 .0">
  <title> PHP </title>
</head>
<body>
<? Php
   // to define the size of the image
$image= imagecreate(400, 300);
  // to define the string we want to display
$imagestring= " HELLO WORLD"; 
// to find the length of the string
$len= strlen($imagestring);  
// to define the background color of the image
$background-color= imagecolorallocate($image, 0, 153, 0); 
// to define the text color of the image
$text-color= imagecolorallocate($image, 255, 255, 255);
      // Prints all character of string using loop
for($i= 0; $i< $len; $i++)
  // imagechar function with loop to display all the letters of word HELLO WORLD in center
    imagechar($image, 6, 190 + 10 * $i, 150, $imagestring[$i], $text-color);
header('Content-type: image/png');
imagepng($image);
?>
</body>
</html>

Output

This code gives the following output.

Here in this program, we have declared various variables like $image to define the size of the image that we require, $background color to define the color of background we require, $text color to define the color of text we require. We have used the image string ( ) function with a for loop to declare the complete string we want to display as an image. To display the output of the image, we have used an inbuilt PHP command header and imagepng to display on the browser.

Next Topic#

← prev next →