I need to use a class callback method on an array inside another method (the callback function belongs to the class).
class Database {
public function escape_string_for_db($string){
return mysql_real_escape_string($string);
}
public function escape_all_array($array){
return array_map($array,"$this->escape_string_for_db");
}
}
Is this the right way to go about that? (I mean, in terms of the second parameter passed to array_map)
I don't think you want to array_filter, but array_map
return array_map(array($this, 'escape_string_for_db'), $array);
but then again, you can just as well do
return array_map('mysql_real_escape_string', $array);
array_filter deletes elements which does not satisfy the predicate. Do you mean array_map?
return array_map(array($this, "escape_string_for_db"), $array);
This should work. You can check in the same function weather your parameter is string or array.
class Database {
public function escape_string_for_db($data)
{
if( !is_array( $data ) )
{
$data =mysql_real_escape_string($data);
}
else
{
//Self call function
$data = array_map(array( 'Database ', 'escape_string_for_db' ), $data );
}
return $data;
}
Simplest solution would be to to pass the method as the callback - see http://www.php.net/manual/en/language.pseudo-types.php#language.types.callback
Alternatively, write a wrapper function:
function wrap_callback($target, $use_obj=false)
{
static $obj;
if ($use_obj) {
if (method_exists($target, 'callback')) {
$obj=$target;
return true;
} else {
trigger_error("callback declared for something with no callback method");
return false;
}
}
return $obj->callback($target);
}
Then:
class Database {
public callback($string){
return mysql_real_escape_string($string);
}
public function escape_all_array($array){
wrap_callback($this, true); // register callback
return array_filter($array,"wrap_calback");
}
}
C.
