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<?php
$a = 1;
function b(&$c)
{
$c++;
return $c;
}
$d=b($a); // d = 2; a = 2;
$d++; // d = 2;
echo($a); // ÏÔʾ2
?>
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<?php
$a = 1;
function &b(&$c)
{
$c++;
return $c;
}
$d=b($a); // ×¢ÒâÕâÀï dÓëb·µ»ØµÄÖµ(È·ÇÐÀ´Ëµ, ÕâÀï·µ»ØµÄ²»ÊÇÖµ, ¶øÊÇÒ»¸öÒýÓÃ, ¶ÔaµÄÒýÓÃ)½øÐÐ°ó¶¨ d = 2; a = 2;
$d++; // d = 3; a = 3;!!!
echo($a); // ÏÔʾ3
?> ......
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<?php
$filename = "/somepath/".$_GET['file'].".txt"; //ÒªÏÂÔØµÄÎļþÃû
header("Content-Type: application/force-download");
header("Content-Disposition: attachment; filename=".basename($filename));
readfile($filename);
?>
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public static String TextToHtml(String sourcestr)
{
int strlen;
String restring="", destr = "";
strlen = sourcestr.length();
for (int i=0; i<strlen; i++)
{
char ch=sourcestr.charAt(i);
switch (ch) &n ......
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<html>
<body>
<h1>
<% out.println("JSP"); %>
</h1>
</body>
</html>
Servlet
public class MyServlet ... {
...
out.println("<html>");
out.println("<body>");
out.println("<h1>");
out.println("Servlet);
out.println("</h1>");
out.println("</body>");
out.println("</ ......