如何定義php類的全局實例？

Question

這是我的代碼：

<?php
require_once 'classes/dbconnect.php';
$connector = new dbconnect();
pp();
function pp(){
$uid="0000007";
$table = $connector->query("SELECT * FROM tc_personal WHERE uid = '$uid'");
$tb = mysql_fetch_object($table);
print $tb->name;
}
?>

但是這段代碼不起作用，因為pp（）函數無法訪問$連接器。 如何將全局變量定義為$ connector？

Answer 1

肯定比使用全局變量更好，即使不是OOP

<?php 
require_once 'classes/dbconnect.php'; 
$connector = new dbconnect(); 
pp($connector); 

function pp($connector){ 
    $uid="0000007"; 
    $table = $connector->query("SELECT * FROM tc_personal WHERE uid = '$uid'"); 
    $tb = mysql_fetch_object($table); 
    print $tb->name; 
} 
?> 

Answer 2

<?php
require_once 'classes/dbconnect.php';
global $connector;
$connector = new dbconnect();
pp();
function pp(){
global $connector;
$uid="0000007";
$table = $connector->query("SELECT * FROM tc_personal WHERE uid = '$uid'");
$tb = mysql_fetch_object($table);
print $tb->name;
}
?>