Tag: Generate Image online

Hi Geeks,
In this tutorial we will learn that how to Create and save dynamic image in php using gd library or Text to Image Convert using php code . in this example we have a requirement to create a image with specific width and height and specific background and watermark also.
So that we have created a PHP Class to generate and save the image to specific folder or path.
please follow the steps to achive this task.
Step 1. Create a class file for generate image with name class.img.php with following code:

<?php
class IMG_PROCESS{

var $_font1="";
var $_font2="";
var $_font_size="";
var $_font_size_watermark="";

public function __construct($font_1,$font_2,$font_size="40",$font_size_watermark="15")
{
	$this->_font1=$font_1;
	$this->_font2=$font_2;
	$this->_font_size=$font_size;
	$this->_font_size_watermark=$font_size_watermark;
	
}

public function imagettftext_cr(&$im, $size, $angle, $x, $y, $color, $fontfile, $text)
{
	// retrieve boundingbox
	$bbox = imagettfbbox($size, $angle, $fontfile, $text);
	// calculate deviation
	$dx = ($bbox[2]-$bbox[0])/2.0 - ($bbox[2]-$bbox[4])/2.0;         // deviation left-right
	$dy = ($bbox[3]-$bbox[1])/2.0 + ($bbox[7]-$bbox[1])/2.0;        // deviation top-bottom
	// new pivotpoint
	$px = $x-$dx;
	$py = $y-$dy;
	return imagettftext($im, $size, $angle, $px, $y, $color, $fontfile, $text);
}

public function generate_img($name,$savepath,$size_arr,$watermark,$rgb=array("34","96","76"))
{
 
     
$image = imagecreate($size_arr['width'],$size_arr['height']);
$rgb_background = imagecolorallocate($image,$rgb[0],$rgb[1],$rgb[2]);
$grey_shade = imagecolorallocate($image,40,40,40);
$white = imagecolorallocate($image,255,255,255);


// Local font files, relative to script
$otherFont = $this->_font1;
$font = $this->_font2;

 
$i=0;
while($i<10){
$this->imagettftext_cr($image,12,$this->_font_size_watermark,rand(100,500),rand(200,500),$grey_shade,$otherFont,$watermark);
$i++;
}

// Main Text

$w=$size_arr['width'] / 2 ;
$h=$size_arr['height'] / 2 ;

$this->imagettftext_cr($image,$this->_font_size,0,$w,$h,$white,$font,$name);
$this->imagettftext_cr($image,$this->_font_size_watermark,0,$w,$h+30,$white,$otherFont,$watermark);
imagejpeg($image,$savepath);

}

}
?>

Step 2. make another php file with any name.
and include the class file as follow:

<?php
include 'class.img.php';//include class file for generate image
?>

Now create a instance of img class with font file names and sizes as following :

<?php
$font_file1="fonts/arial.ttf";
$font_file2="fonts/times.ttf";
$font_size="40";
$font_size_watermark="15";
?>

Init with font files and font sizes as follow:

<?php
$img_obj=new IMG_PROCESS($font_file1,$font_file2,$font_size,$font_size_watermark);
?>

Now generate a single image as follow:

<?php
	$text_to_image="THIS IS MY TEXT";//
	$size_arr=array("width"=>"500","height"=>"500"); //define height and width
	$savepath="images/my_image_test.jpg";
	$watermark="w3school test";
	$rgb=array("0","0","0");//define a black rgb scheme
	$img_obj->generate_img($text_to_image,$savepath,$size_arr,$watermark,$rgb); //call the generate image 
?>

Generate multiple images in loop as following code :

<?php
$text=array("MY IMAGE TEXT 1","MY IMAGE TEXT 2","MY IMAGE TEXT 3","MY IMAGE TEXT 4","MY IMAGE TEXT 5",);
foreach($text as $title)
{
	 
	//
	$img_name=strtolower(str_replace(" ","-",$title));
	$size_arr=array("width"=>"1366","height"=>"768"); //define height and width
	$savepath="images/".$img_name.".jpg";
	$watermark="w3school test watermark";
	$rgb=array("34","96","76");//define a light green rgb scheme
	$img_obj->generate_img($title,$savepath,$size_arr,$watermark,$rgb); //call the generate image function
	// 
 
	
}
?>

Complete Code of above snippets:

<?php 
include 'class.img.php';//include class file for generate image

//now create a instance of img class with font file names and sizes as following 
$font_file1="fonts/arial.ttf";
$font_file2="fonts/times.ttf";

$font_size="40";
$font_size_watermark="15";

$img_obj=new IMG_PROCESS($font_file1,$font_file2,$font_size,$font_size_watermark); //init with font files and font sizes

//now generate a single image  

	$text_to_image="THIS IS MY TEXT";//
	$size_arr=array("width"=>"500","height"=>"500"); //define height and width
	$savepath="images/my_image_test.jpg";
	$watermark="w3school test";
	$rgb=array("0","0","0");//define a black rgb scheme
	$img_obj->generate_img($text_to_image,$savepath,$size_arr,$watermark,$rgb); //call the generate image 


//now generate a single image  

 


//generate multiple images in loop

$text=array("MY IMAGE TEXT 1","MY IMAGE TEXT 2","MY IMAGE TEXT 3","MY IMAGE TEXT 4","MY IMAGE TEXT 5",);
foreach($text as $title)
{
	 
	//
	$img_name=strtolower(str_replace(" ","-",$title));
	$size_arr=array("width"=>"1366","height"=>"768"); //define height and width
	$savepath="images/".$img_name.".jpg";
	$watermark="w3school test watermark";
	$rgb=array("34","96","76");//define a light green rgb scheme
	$img_obj->generate_img($title,$savepath,$size_arr,$watermark,$rgb); //call the generate image function
	// 
 
	
}

//generate multiple images in loop

?>

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Note: please confirm GD library on your php server. and create a images folder in project with 755 or 775 or 777 permissions.