<?php
/* create class */
class Record {
/* record information will be held in here */
private $info;
/* constructor */
function Record($record_array) {
$record_array['body'] = 'this is a new attribution';
$this->info = $record_array;
}
/* dynamic function server */
function __call($method,$arguments) {
$meth = $this->from_case(substr($method,3,strlen($method)-3));
return array_key_exists($meth,$this->info) ? $this->info[$meth] : false;
}
function from_case($str) {
$str[0] = strtolower($str[0]);
$func = create_function('$c', 'return "_" . strtolower($c[1]);'); // function ($c) { return "_" . strtolower($c[1]); }
return preg_replace_callback('/([A-Z])/', $func, $str);
}
}
/* usage */
$Record = new Record(
array(
'id' => 12,
'title' => 'Greatest Hits',
'description' => 'The greatest hits from the best band in the world!'
)
);
/* proof it works! */
echo 'The ID is: '.$Record->getId().'<br>'; // returns 12
echo 'The Title is: '.$Record->getTitle().'<br>'; // returns "Greatest Hits"
echo 'The Description is: '.$Record->getDescription().'<br>'; //returns "The greatest hits from the best band in the world!"
echo 'The Body is: '.$Record->getBody(); //returns "The greatest hits from the best band in the world!"
?>
重点在于: __call 和 create_function