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(PECL imagick 2.1.0)
Imagick::setFont — Sets font
$font 
   )
   Sets object's font property. This method can be used for example to set font for 
   caption: pseudo-format. The font needs to be configured in ImageMagick configuration
   or a file by the name of font must exist. This method should
   not be confused with  ImagickDraw::setFont()  which sets the font
   for a specific ImagickDraw object.
   此方法在Imagick基于ImageMagick 6.3.7以上版本编译时可用。
  
font Font name or a filename
   成功时返回  TRUE 。
  
Example #1 A Imagick::setFont() example
Example of using Imagick::setFont
  <?php
 /* Create new imagick object */
 $im  = new  Imagick ();
 /* Set the font for the object */
 $im -> setFont ( "example.ttf" );
 /* Create new caption */
 $im -> newPseudoImage ( 100 ,  100 ,  "caption:Hello" );
 /* Do something with the image */
 ?>