> -----Original Message-----
> From: ?? [mailto:xiaohan2...@gmail.com]
> Sent: Thursday, November 25, 2010 12:21 AM
> To: php-general@lists.php.net
> Subject: [PHP]any way to iterate the fields in a class
>
> Actually, what I am seeking is how to assign values to the
> fields in a class
> via an array.
> I have tried like this. However failed.
> I have a class.
> *class book{
> var name;*
> *var price;*
> *}*
> *
> *
> And I have got an array.
>
> *$array=array('name'=>'harry potter','price'=>'$122');*
>
> By using function *extract(), *I assign the values to $name
> and $price while
> not $this->name and $this->price, which is not what I want.
>
> So I am thinking iterating the fields in an array and assign
> the values each
> by each through an array.
>
> Is there any way to assign values to the fields in a class
> via an array.
>
> Thanks in advance!
>
/**
* generate a key/value pair from the class' variables.
*
* @access public
* @return array
* @author Daevid Vincent [daevid.vinc...@panasonic.aero]
* @version 1.0
* @date 01/27/09
*/
public function get_array()
{
$row = array();
foreach($this as $key => $value)
$row[$key] = $value;
return $row;
}
/**
* Shows all exposed variables in this class
*
* @access public
* @return array
* @param boolean $print to print out each value
* @author Daevid Vincent [daevid.vinc...@panasonic.aero]
* @version 1.1
* @date 01/27/09
*/
public function iterate_visible($print = false)
{
if ($print) echo
"\n<BR><B>".$this->get_class_name()."::iterateVisible:</B><BR>\n";
$tmp = array();
foreach($this as $key => $value)
{
$tmp[$key] = $value;
if ($print) print $key." => ".$value."<BR>\n";
}
return $tmp;
}
And related:
/**
* Provides generic getters and setters
*
* @access public
* @param string $method The method name.
* @param array $arguments The arguments passed to the method.
* @return mixed
* @author Daevid Vincent [daevid.vinc...@panasonic.aero]
* @date 02/02/09
* @see __get(), __set()
*/
public function __call( $method, $arguments )
{
$prefix = strtolower( substr( $method, 0, 3 ) );
$property = strtolower( substr( $method, 4 ) );
if ( empty($prefix) || empty($property) ) return;
//exit("__call($method) :: prefix='$prefix' and
property='$property'");
if ( 'get' == $prefix )
{
if ( property_exists($this, $property) )
return $this->$property;
else
return $this->__get($property);
}
elseif ( 'set' == $prefix )
{
if ( property_exists($this, $property) )
return $this->$property = $arguments[0];
else
return $this->__set($property,
$arguments[0]);
}
// Technically we should never get to this point as most
calls are get_() or set_()
echo "<p><font color='#ff0000'>Attempted to
'".$prefix."->".$method."()' in class
'".$this->get_class_name()."'.</font><p>\n";
backtrace();
}
/**
* magic function to handle any accessing of undefined variables.
* Since PHP is "lax" this will help prevent stupid mistakes.
*
* @access public
* @return void
* @param mixed $property name of the variable
* @author Daevid Vincent [daevid.vinc...@panasonic.aero]
* @date 2010-08-12
* @see __set(), __call()
*/
public function __get($property)
{
if ($_SESSION['DEVELOPMENT'] && !$_SESSION['mobile'])
{
echo "<p><font color='#ff0000'>Attempted to __get()
non-existant property/variable '".$property."' in class
'".$this->get_class_name()."'.</font><p>\n";
$this->suggest_alternative($property);
backtrace();
exit;
}
//else exit("__get($property) NO SUCH PROPERTY IN
".$this->get_class_name().' CLASS');
//[dv] commented this out as it was obviously exiting on
PROD, when really it should just ignore
//Throw new BadProperty($this, 'get', $property);
}
/**
* magic function to handle any setting of undefined variables.
* Since PHP is "lax" this will help prevent stupid mistakes.
*
* @access public
* @return void
* @param mixed $property name of the variable
* @param mixed $val value of the variable
* @author Daevid Vincent [daevid.vinc...@panasonic.aero]
* @date 2010-08-12
* @see __get(), __call()
*/
public function __set($property, $val)
{
if ($_SESSION['DEVELOPMENT'] && !$_SESSION['mobile'])
{
echo "<p><font color='#ff0000'>Attempted to __set()
non-existant property/variable '".$property."' to '".$val."' in class
'".$this->get_class_name()."'.</font><p>\n";
$this->suggest_alternative($property);
backtrace();
exit;
}
//else exit("__set($property) NO SUCH PROPERTY IN
".$this->get_class_name().' CLASS');
//[dv] commented this out as it was obviously exiting on
PROD, when really it should just ignore
//Throw new BadProperty($this, 'set', $property);
}
/**
* Suggests alternative properties should a __get() or __set() fail
*
* @param string $property
* @return string
* @author Daevid Vincent [daevid.vinc...@panasonic.aero]
* @date 05/19/09
* @see __get(), __set(), __call()
*/
public function suggest_alternative($property)
{
$parts = explode('_',$property);
foreach($parts as $i => $p) if ( in_array($p,
array('_','id','get','set')) ) unset($parts[$i]);
echo 'checking for <b>'.implode(' or ',$parts)."</b> and
suggesting the following:<br/>\n";
foreach($this as $key => $value)
foreach($parts as $p)
if (stripos($key, $p) !== false)
{
if ($property == 'get_'.$p ||
$property == 'set_'.$p)
$possibilities[] =
'<li>'.$key."<b>()</b> <i>note the parenthesis</i></li>";
else
$possibilities[] =
'<li>'.$key."</li>";
}
echo
"<ul>\n".implode("\n",array_unique($possibilities))."</ul>\n";
//[dv] unfortunately there doesn't seem to be a way to know
if someone called this as a method () or directly :(
//if ( strpos($property, '()') === false )
if (count($parts) == 1 && $property == 'get_'.$parts[0] ||
$property == 'set_'.$parts[0])
echo 'Perhaps you forgot the parenthesis at the end
of the method call, and meant this instead: <b>'.$property.'()</b>';
}
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