ESpaceHolder
It is a Yii Framework (http://yiiframework.com) extension, so you'll need a running Yii install to use it. (you'll also need internet access!)
It (hopefully) makes it easier to use http://placehold.it/
Installation
Step 1) extract the content under protected/extensions
Step 2) call it in a view like:
// a default (but useless) 50x50 box
$this->widget( 'ext.espaceholder.ESpaceHolder' );
// something more useful
$this->widget(
'ext.espaceholder.ESpaceHolder',
array(
'size' => '250', // you can also do 300x250
'text' => 'Yii ROCKS!',
'htmlOptions' => array( 'title' => 'test image' )
)
);