Question

这是我的代码：

<?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;
}
?>

但是这段代码不起作用，因为pp（）函数无法访问$ connector。如何将全局变量定义为$ connector？

Answer 1

肯定比使用全局变量更好，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;
}
?>

如何定义php类的全局实例？

2 个答案: