Regarding __toString
class my_tag_A{
public $id='';
public $href='';
public $target='';
public $class='';
public $label='';
function __construct($href, $label){
$this->href = $href;
$this->label = $label;
}
public function __toString(){
return 'nz_arr(
array('id', 'href', 'target', 'class')) . ' >'
. $this->label . '';
}
function nz_arr($attrib_arr){
$s = '';
foreach($attrib_arr as $attrib){
$s .= $this->nz($attrib);
}
return $s;
}
/**
* Print the tag attribute if it is not blank, such as id="$this->id"
* @param string $attrib
* @return string
*/
function nz($attrib){
$s = '';
if($this->$attrib != '') $s = $attrib .' = "' . $this->$attrib . '"';
return $s;
}
//This causes RECURSION because of parsing between double quotes.
//This is a very UNEXPECTED behaviour!
function nz_($attrib){
$s = '';
if($this->$attrib != '') $s = "$attrib = \"$this->$attrib\"";
return $s;
}
}//end class
//usage
$a = new my_tag_A('abc.php', 'ABC'); $a->target = '_blank';
echo $a;
//prints:
// ABC
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