javascript - How to solve double quote inside double quote syntax error -

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i have project have php code, inside have echo html has javascript onclick function() accepts double-quotes. problem echo uses double-quote there's syntax error in code , i'm new php don't know how solve this.

here code:

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>";

i know syntax error don't know how solve it. appreciated.

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>"; }

simply escaping \"


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