PHP Text to Image

Change the settings and the click Create

Text		The text to display
Rotation		0=normal 90=sideways
Font Size	8 12 18 24 32 48 64	Points
Font	Arial Times New Roman Tahoma Grand Stylus
Padding		Space around the image
Transparent
Fore Colour	R G B	(0-255)
Back Colour	R G B	(0-255)
(pop-up window)

 

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Description

This script is a means to convert a string of text into an image. This has some simple uses such as displying text such as email address that cannot be programmaticly found. This can help to reduce the possibilty of yur email address being picked up by web crawlers and used for junk mail.

How To Use

To use the example interface above, simply modify or insert the string of text. You can edit any of the other settings, but this is optional.

Further Uses and Ideas:

How it Works:

The PHP Script

/* text to image converter daftlogic www.daftlogic.com */ Header("Content-type: image/png"); class textPNG { var $font = 'fonts/TIMES.TTF'; //default font. directory relative to script directory. var $msg = "no text"; // default text to display. var $size = 24; // default font size. var $rot = 0; // rotation in degrees. var $pad = 0; // padding. var $transparent = 1; // transparency set to on. var $red = 0; // white text... var $grn = 0; var $blu = 0; var $bg_red = 255; // on black background. var $bg_grn = 255; var $bg_blu = 255; function draw() { $width = 0; $height = 0; $offset_x = 0; $offset_y = 0; $bounds = array(); $image = ""; // get the font height. $bounds = ImageTTFBBox($this->size, $this->rot, $this->font, "W"); if ($this->rot < 0) { $font_height = abs($bounds[7]-$bounds[1]); } else if ($this->rot > 0) { $font_height = abs($bounds[1]-$bounds[7]); } else { $font_height = abs($bounds[7]-$bounds[1]); } // determine bounding box. $bounds = ImageTTFBBox($this->size, $this->rot, $this->font, $this->msg); if ($this->rot < 0) { $width = abs($bounds[4]-$bounds[0]); $height = abs($bounds[3]-$bounds[7]); $offset_y = $font_height; $offset_x = 0; } else if ($this->rot > 0) { $width = abs($bounds[2]-$bounds[6]); $height = abs($bounds[1]-$bounds[5]); $offset_y = abs($bounds[7]-$bounds[5])+$font_height; $offset_x = abs($bounds[0]-$bounds[6]); } else { $width = abs($bounds[4]-$bounds[6]); $height = abs($bounds[7]-$bounds[1]); $offset_y = $font_height;; $offset_x = 0; } $image = imagecreate($width+($this->pad*2)+1,$height+($this->pad*2)+1); $background = ImageColorAllocate($image, $this->bg_red, $this->bg_grn, $this->bg_blu); $foreground = ImageColorAllocate($image, $this->red, $this->grn, $this->blu); if ($this->transparent) ImageColorTransparent($image, $background); ImageInterlace($image, false); // render the image ImageTTFText($image, $this->size, $this->rot, $offset_x+$this->pad, $offset_y+$this->pad, $foreground, $this->font, $this->msg); // output PNG object. imagePNG($image); } } $text = new textPNG; if (isset($msg)) $text->msg = $msg; // text to display if (isset($font)) $text->font = $font; // font to use (include directory if needed). if (isset($size)) $text->size = $size; // size in points if (isset($rot)) $text->rot = $rot; // rotation if (isset($pad)) $text->pad = $pad; // padding in pixels around text. if (isset($red)) $text->red = $red; // text color if (isset($grn)) $text->grn = $grn; // .. if (isset($blu)) $text->blu = $blu; // .. if (isset($bg_red)) $text->bg_red = $bg_red; // background color. if (isset($bg_grn)) $text->bg_grn = $bg_grn; // .. if (isset($bg_blu)) $text->bg_blu = $bg_blu; // .. if (isset($tr)) $text->transparent = $tr; // transparency flag (boolean). $text->draw(); // GO!!!!!

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Relevant Links

PHP Manual - http://uk2.php.net/imagepng

Previous Comments For This Page

Does not seem to work with non-latin text.
By Tael_ on 17/12/2008