How to use the PHP function imagettftext to process images_PHP tutorial

Definition

Write ttf text into the image.

Syntax:

array imagettftext(int im, int size, int angle, int x, int y, int col, string fontfile, string text);

Return value:

Array

Function type:

Graphics processing

PHP function imagettftext content description:

This function writes ttf (truetype fonts) font text into the image. The parameter size is the size of the font; angle is the angle of the font, calculated clockwise, 0 degrees is horizontal, which is the direction of three o'clock (from left to right), and 90 degrees is the text from bottom to top; x, The second parameter y is the coordinate value of the text (the origin is the upper left corner); the

parameter col is the color of the text; fontfile is the name of the font file, which can also be a remote file; text is of course the string content. The return value is an array, including eight elements. The first two are the x and y coordinates of the lower left corner respectively. The third and fourth groups are the x and y coordinates of the lower right corner. The fifth, sixth, seventh and eighth groups are the upper right corner respectively. And the x, y coordinates of the upper left. To use this function, the system must have the gd and freetype function libraries installed.

Example of using PHP function imagettftext

This example creates a black background image of 400x30 pixel size, and uses arial vector font to write the white text of i am number one!!.

<ol class="dp-xml">
<li class="alt"><span><span class="tag"><span> ?php  </span></span></span></li>
<li><span>header("content-type: image/gif");  </span></li>
<li class="alt">
<span>$</span><span class="attribute">im</span><span> = </span><span class="attribute-value">imagecreate</span><span>(400,30);  </span>
</li>
<li>
<span>$</span><span class="attribute">black</span><span> = </span><span class="attribute-value">imagecolorallocate</span><span>($im,<br> 0,0,0);  </span>
</li>
<li class="alt">
<span>$</span><span class="attribute">white</span><span> = </span><span class="attribute-value">imagecolorallocate</span><span>($im, <br>255,255,255);  </span>
</li>
<li><span>imagettftext($im, 20, 0, 10, 20, <br>$white, "/somewhere/arial.ttf", <br>"i am number one !!");  </span></li>
<li class="alt"><span>imagegif($im);  </span></li>
<li><span>imagedestroy($im);  </span></li>
<li class="alt">
<span class="tag">?></span><span> </span>
</li>
</ol>

http://www.bkjia.com/PHPjc/446059.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/446059.htmlTechArticleDefine writing ttf text into the image. Syntax: array imagettftext(int im, int size, int angle, int x, int y, int col, string fontfile, string text); Return value: Array function type: Graphic...