Question

我有一个项目，我有一个PHP代码，在这里我必须回显HTML，它有JavaScript onclick函数（）只接受双引号。问题是echo使用双引号，因此我的代码中存在语法错误，而且我是PHP的新手，所以我不知道如何解决这个问题。

以下是代码：

echo "
          <span class = 'username'>".$row['username']."</span>
          <form name = 'matchcreator' class='amount' action='arena.php' method ='post'>
          <input  name = 'm-maker' type = 'number' class='price'  min='5' max='100' value='5'/>
          <div class = 'review'>
          <p>REVIEW</p>
          </div>
          <button id ='send' type = 'button' onclick="Confirm.render('yes','no')">Send Challenge</button>
          </form>
           ";               
    echo "<br>";

我知道这是一个语法错误，我不知道如何解决它。任何帮助将不胜感激。

Answer 1

echo "
          <span class = 'username'>".$row['username']."</span>
          <form name = 'matchcreator' class='amount' action='arena.php' method ='post'>
          <input  name = 'm-maker' type = 'number' class='price'  min='5' max='100' value='5'/>
          <div class = 'review'>
          <p>REVIEW</p>
          </div>
          <button id ='send' type = 'button' onclick=\"Confirm.render('yes','no')\">Send Challenge</button>
          </form>
           ";               
    echo "<br>";
}

只需用\“

转义即可

Answer 2

您只需使用\运算符将其转义即可。这告诉PHP不要将其视为PHP中的引用，而是将其视为字符串的一部分。一个例子

echo "<input name=\"send\" />";

会输出

<input name="send" />

因此，在您的特定情况下，onclick="Confirm.render('yes','no')"需要对其双引号进行转义，例如：onclick=\"Confirm.render('yes','no')\"

您也可以在解析HTML时退出PHP并回显特定的PHP元素，这样可以使代码更简单，更清晰

<?php /*begin PHP here, and exit it */?>
<span class="username"><?php echo $row['username']; ?></span>
<form name "matchcreator" ><!-- rest of form -->
<?php // continue PHP...

Answer 3

echo "
              <span class = 'username'>".$row['username']."</span>
              <form name = 'matchcreator' class='amount'              action='arena.php' method ='post'>
              <input  name = 'm-maker' type = 'number' class='price'  min='5' max='100' value='5'/>
              <div class = 'review'>
              <p>REVIEW</p>
              </div>
              <button id ='send' type = 'button' onclick=\"Confirm.render('yes','no')\">Send Challenge</button>
              </form>
               ";               
        echo "<br>";

使用反斜杠double quote

逃避\

Answer 4

将onclick=\"Confirm.render('yes','no')\"放在下面

<button id ='send' type = 'button' onclick=\"Confirm.render('yes','no')\">Send Challenge</button>

Answer 5

用双斜线划掉双引号。

echo "
      <span class = 'username'>".$row['username']."</span>
      <form name = 'matchcreator' class='amount' action='arena.php' method ='post'>
      <input  name = 'm-maker' type = 'number' class='price'  min='5' max='100' value='5'/>
      <div class = 'review'>
      <p>REVIEW</p>
      </div>
      <button id ='send' type = 'button' onclick=\"Confirm.render('yes','no')\">Send Challenge</button>
      </form>
       ";               
echo "<br>";

这适合我。

Answer 6

使用它像这样：

echo '<span class = "username">'.$row['username'].'</span>
                  <form name = "matchcreator" class="amount"  action="arena.php" method ="post">
                  <input  name = "m-maker" type = "number" class="price"  min="5" max="100" value="5" />
                  <div class = "review">
                  <p>REVIEW</p>
                  </div>
                  <button id ="send" type = "button" onclick="Confirm.render(yes,no)">Send Challenge</button>
                  </form>
                   ';               
            echo '<br>';

Answer 7

以下是您更正的更简洁的代码clean code。现在您只需要更改确认对话框按钮（是和否）。

?>
<span class = 'username'><?php echo $row['username']; ?></span>
<form name = 'matchcreator' class='amount' action='arena.php' method='post'>
<input  name = 'm-maker' type = 'number' class='price'  min='5' max='100' value='5'/>
<div class = 'review'>
    <p>
        REVIEW
    </p>
</div>
<button id ='send' type = 'button' onclick="return confirm('are you sure?')">Send Challenge</button>
</form>
<br>

<?php

//rest of the code

?>

希望这会有所帮助。

Answer 8

您也可以这样做：只需在{}

中编写代码即可

echo     "<span class = 'username'>{$row['username']}</span>
          <form name = 'matchcreator' class='amount' action='arena.php' method ='post'>
          <input  name = 'm-maker' type = 'number' class='price'  min='5' max='100' value='5'/>
          <div class = 'review'>
          <p>REVIEW</p>
          </div>
          <button id ='send' type = 'button' onclick={Confirm.render('yes','no')}>Send Challenge</button>
          </form> <br>";    
?>

Answer 9

试试这个： -

{{1}}

如何解决双引号语法错误

9 个答案: