PHP网站开发中的变量作用域_PHP教程

view plaincopy to clipboardprint?<p></p><p>　public class Test { <br>private static int Count = 0; //该变量在整个应用程序中都有效。 <br>} <br>public class Test{ <br>private static int Count = 0; //该变量在整个应用程序中都有效。 <br>} </p>

view plaincopy to clipboardprint?<p></p><p><?php   <br>$url = "www.51cto.com"; <br>function _DisplayUrl() { <br>echo $url; <br>} <br>function DisplayUrl() { <br>global $url; <br>echo $url; <br>} <br>_DisplayUrl(); <br>DisplayUrl(); <br>?> <br><br>$url = "www.51cto.com"; <br>function _DisplayUrl() { <br>echo $url; <br>} <br>function DisplayUrl(){ <br>global $url; <br>echo $url; <br>} <br>_DisplayUrl(); <br>DisplayUrl(); <br>?> </p>

view plaincopy to clipboardprint?<p></p><p>　 <?php   <br>function _DisplayUrl() { <br>global $myName; <br>$myName='yibin'; <br>} <br>_DisplayUrl(); <br>echo $myName; //output yibin <br>?></p>