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POPHP / jQuery - single quote doubled in Ajax call
 

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  1. POPHP / jQuery - single quote doubled in Ajax call
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    <p>I hope this is not a duplicate, but all other problems with single quote in jQuery-Ajax-calls were talking about errors, not about what I observe here.</p> <p>I have a Problem with jQuery-Ajax-calls which contain a single quote in the sent parameters - those are always doubled on the server side! I wrote a small playground-script, containing both front- and backend, to show the problem:</p> <p><strong>playground.php</strong></p> <pre><code>&lt;?php if(isset($_REQUEST["foo"])) { ?&gt; &lt;root&gt; &lt;fooVal&gt; &lt;?php echo $_REQUEST["foo"]; ?&gt; &lt;/fooVal&gt; &lt;/root&gt; &lt;?php die; } ?&gt; &lt;!DOCTYPE html&gt; &lt;html&gt; &lt;head&gt; &lt;meta http-equiv="Content-Type" content="text/html; charset=UTF-8"&gt; &lt;script type="text/javascript" src="jquery-1.7.2.min.js"&gt;&lt;/script&gt; &lt;script&gt; function testSend() { $.ajax({ type: "get", url: "playground.php", data: {"foo" : $("#fooInput").val()}, success: function(data) { $("#fooResult").text($(data).find("fooVal").text()); } }); } &lt;/script&gt; &lt;/head&gt; &lt;body&gt; &lt;input type="text" id="fooInput" /&gt; &lt;a href="javascript:testSend()"&gt;send&lt;/a&gt; &lt;div id="fooResult"&gt;&lt;/div&gt; &lt;/body&gt; &lt;/html&gt; </code></pre> <p>If I enter into the input field for example:</p> <pre><code>L'eclisse </code></pre> <p>The div#fooResult contains after the AJAX-call:</p> <pre><code>L''eclisse </code></pre> <p>So somehow the script made two single quotes out of one. Examining with firebug, I see that the Parameter is sent correctly with only one single quote. But the answer always contains two of them, no matter if I output (in the PHP part on the top of the script) in XML or via json_encode or just a plain echo.</p> <p><strong>What I already tried:</strong></p> <ul> <li>using <code>encodeURI(($"#fooInput").val())</code> - no change</li> <li>using <code>encodeURIComponent(($"#fooInput").val())</code> - no change</li> <li>using <code>escape($("#fooInput").val())</code> - this will output L%27eclisse </li> </ul> <p>Does anyone have a suggestion, what I might do? Either on the client (javascript) side or on the server (php) side of the script? Thanks in advance!</p>
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    1. COHave you tried `L\'eclisse` from the client to see what comes back? To achieve that you'll need to escape it something like this `var string = $("#fooInput").val().replace(/'/g, "\\'");`
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    2. CO@FDL , tried it now, the result is: `\''eclisse`.
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