<?php/*1.把html用单引号引起来用echo 输出,  * echo '<form action="search.php" method="post" name="" id="">'; echo  '<input name="search" type="text" id="search"/>'; echo '<input name="Submit" type="submit" value="搜索" />' ; echo "</form>"; */  //2，用点号拼接起来然后统一用echo 输出, //$data='<form action="search.php" method="post" name="" id="">'; //$data.='<input name="search" type="text" id="search"/>'; //$data.='<input name="Submit" type="submit" value="搜索" />'; //$data.="</form>"; //echo $data;  //3，下边方法最简单直接在 头 echo <<< EOT  在尾 EOT; 即可 注意头尾独占一行 /*echo <<< EOT  <form action="search.php" method="post" name="" id="">  <input name="search" type="text" id="search"/>  <input name="Submit" type="submit" value="搜索" />  </form> EOT;*/  ?>