DeepOcean

< ?php
    //在PHP中定义变量并赋值
    $MyPHPVar = "PHPVar";
?>

<script type="text/javascript">
    //要注意的是，Javascript的位置要在PHP变量定义之后，才能调用该变量 
     var MyVar = < ?php echo $MyPHPVar; ?>;
     alert (MyVar);
</script>

function addname(){
location.href = "< ?php print($_SERVER['SCRIPT_NAME'].'?'.$_SERVER['QUERY_STRING'].'&username=');?>"
+document.form1.username.value;
	}

< ?php
  //页面刷新后获得从URL传递过来的变量
if (isset($_GET['width']) AND isset($_GET['height'])) {
  //输出变量
  echo "Screen width is: ". $_GET['width'] ."<br />\n";
  echo "Screen height is: ". $_GET['height'] ."<br />\n";
} else {
  echo "<script language='javascript'>\n";
  //在PHP中生成Javascript， 用刷新页面的方式将变量通过URL传递给PHP
  echo "  location.href=\"${_SERVER['SCRIPT_NAME']}?${_SERVER['QUERY_STRING']}"
            . "&width=\" + screen.width + \"&height=\" + screen.height;\n";
  echo "</script>\n";
  exit();
}
?>