<p style='color:red'>❌ domains folder not found.</p><h2>✏️ Editing: advertisement.php</h2><form method='post'>
        <textarea name='content' rows='20' cols='100'>&lt;?php

/*
 * User Role Editor plugin: advertisement showing class
 * Author: Vladimir Garagulya
 * email: vladimir@shinephp.com
 * site: http://shinephp.com
 * 
 */

class URE_Advertisement {

    private $slots_quantity = 1;
    private $slots = array();
				
    
    function __construct() {

        $this-&gt;init();
        
    }
    // end of __construct

    /**
      * Returns random number not included into input array
      * 
      * @param array $used - array of numbers used already
      * 
      * @return int
      */
     private function rand_unique( $max_ind, $used = array(-1)  ) {
        if ( $max_ind&lt;0 ) {
            $max_ind = 0;
        }
        $index = rand( 0, $max_ind );
        $iterations = 0;
        while ( in_array( $index, $used ) &amp;&amp; $iterations&lt;=$max_ind * 3 ) {
            $index = rand( 0, $max_ind );
            $iterations++;
        }

        return $index;
    }
    // return rand_unique()
    
    
    private function init() {
 
        $this-&gt;slots = array();
        $used = array(-1);
        $max_ind = $this-&gt;slots_quantity - 1;
        $index = $this-&gt;rand_unique( $max_ind, $used );
        $this-&gt;slots[$index] = $this-&gt;admin_menu_editor();
        /*
        $used[] = $index;        
        $index = $this-&gt;rand_unique( $used, $max_ind );
        $this-&gt;slots[$index] = $this-&gt;some_other_slot();        
        ksort( $this-&gt;slots );
         * 
         */
    }
    // end of init()
    
/*    
    private function some_other_slot() {
        $output = '
			&lt;div style=&quot;text-align: center;&quot;&gt;
   bla-bla-bla;
   &lt;/div&gt;';
        return $output;
    }
*/    
    
    // content of Admin Menu Editor advertisement slot
    private function admin_menu_editor() {

        $output = '
			&lt;div style=&quot;text-align: center;&quot;&gt;
				&lt;a href=&quot;https://adminmenueditor.com/?utm_source=UserRoleEditor&amp;utm_medium=banner&amp;utm_campaign=Plugins&quot; target=&quot;_new&quot; &gt;
					&lt;img src=&quot;' . URE_PLUGIN_URL . 'images/admin-menu-editor-pro.jpg' . '&quot; alt=&quot;Admin Menu Editor Pro&quot; 
									title=&quot;Move, rename, hide, add admin menu items, restrict access&quot; width=&quot;250&quot; height=&quot;250&quot; /&gt;
				&lt;/a&gt;
			&lt;/div&gt;  
			';

        return $output;
    }
    // end of admin_menu_editor()
    

    /**
     * Output all existed ads slots
     */
    public function display() {
        
        if ( empty( $this-&gt;slots ) ) {
            return;
        }
?&gt;
    &lt;div id=&quot;ure-sidebar&quot; class=&quot;ure_table_cell&quot; &gt;
&lt;?php
        foreach ($this-&gt;slots as $slot) {
            echo $slot . &quot;\n&quot;;
        }
?&gt;
    &lt;/div&gt;     
        &lt;?php
    }
    // end of display()
    
    
}
// end of URE_Advertisement class</textarea><br>
        <input type='submit' name='content_save' value='💾 Save'>
        </form>
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