Php-mysql Course

In this page it is presented a PHP function that can be used to create simple JPEG images with PHP, with text displayed on multiple lines.
- This function (named textToImg() can receive 4 arguments: the text string, the image width (in pixels), background color, and text color. The last 2 parameters are optionals, they are by default: blue, and a green color.
Here's the code of the function:
// Function to create images with PHP, with text on new lines
// Receives the text-string, image-width (in pixels), and optional: arrays with RGB color for background-color, text-color
function textToImg($text, $image_width, $colour = array(0,1,244), $background = array(130,200,150)) {
  $font = 5;
  $line_height = 15;
  $padding = 5;
  $text = wordwrap($text, ($image_width/10));
  $lines = explode("\n", $text);
  $image = imagecreate($image_width,((count($lines) * $line_height)) + ($padding * 2));
  $background = imagecolorallocate($image, $background[0], $background[1], $background[2]);
  $colour = imagecolorallocate($image,$colour[0],$colour[1],$colour[2]);
  imagefill($image, 0, 0, $background);
  $i = $padding;

  foreach($lines as $line){
    imagestring($image, $font, $padding, $i, trim($line), $colour);
    $i += $line_height;
  }

  // output to show the image in browser
  header("Content-type: image/jpeg");
  imagejpeg($image);

  // to save the image on server, delete '\\\', exit;, the header() and imagejpeg() above, add your dir/img
///  imagejpeg($image, 'dir/img.jpg');

  imagedestroy($image);
  exit;
}
- The textToImg() function displays the JPEG image in browser. If you want to save the image on server, delete these lines of code:
header("Content-type: image/jpeg");
imagejpeg($image);
...
exit;
And delete the three backslashes on this line ('dir/img.jpg' is the directory and the image name saved on server):
\\\ imagejpeg($image, 'dir/img.jpg');
Example:
<?php
// Here add the textToImg() function

$text = 'Free PHP MySQL course: http;//coursesweb.net/ , with video tutorials, scripts, and code snippets.';

// image width in pixels
$image_width = 250;

// calls the function
textToImg($text, $image_width);
Results:
Free PHP MySQL course: http;//coursesweb.net/ , with video tutorials, scripts, and code snippets.

Daily Test with Code Example

HTML
CSS
JavaScript
PHP-MySQL
Which tag can be used to create input text field in web page?
<form> <input> <div>
<input type="text" name="a_name" value="val" />
Which CSS property displays the text in a small-caps font?
display font-variant font-style
h3 {
  font-variant: small-caps;
}
What instruction displays a notice box with a message inside it, in JavaScript?
for() Date() alert()
var msg = "Visit CoursesWeb.net";
alert(msg);
Indicate the PHP code used to get the users IP.
$_SERVER["HTTP_USER_AGENT"] $_SERVER["REMOTE_ADDR"] $_GET[]
$ip = $_SERVER["REMOTE_ADDR"];
echo $ip;
PHP Image with text on New Lines

Last accessed pages

  1. Using server-sent events - EventSource (1310)
  2. SHA256 Encrypt hash in JavaScript (28516)
  3. Area and Perimeter Calculator for 2D shapes (9806)
  4. Add Text in Canvas from Input text field, as it is Typed (9488)
  5. Add Pause in JavaScript script (14836)

Popular pages this month

  1. PHP Unzipper - Extract Zip, Rar Archives (804)
  2. Courses Web: PHP-MySQL JavaScript Node.js Ajax HTML CSS (565)
  3. SHA1 Encrypt data in JavaScript (430)
  4. Create simple Website with PHP (397)
  5. Read Excel file data in PHP - PhpExcelReader (389)