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POString replace with multiple dropdown search boxes
 

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    <p>I have made a dropdown search option when visitors can select from several words and search for that.</p> <p>The problem is that with every word extra data is added.</p> <p>With one word it is</p> <pre><code>/?s=keyword </code></pre> <p>With 2 words it is</p> <pre><code>/?s=keyword&amp;sn=keyword2 </code></pre> <p>but it should be</p> <pre><code>/?s=keyword+keyword2 </code></pre> <p>The form is as followed</p> <pre><code>&lt;form role="search" method="get" id="searchform" action="&lt;?php bloginfo('siteurl'); ?&gt;"&gt; &lt;div&gt; &lt;label class="screen-reader-text" for="s"&gt;Search for:&lt;/label&gt; Type &lt;select name='s' id='type' class='postform' &gt; &lt;option value='' selected='selected'&gt;All&lt;/option&gt; &lt;option class="level-0" value="dog"&gt;Dog&lt;/option&gt; &lt;option class="level-0" value="cat"&gt;Cat&lt;/option&gt; &lt;/select&gt; Color &lt;select name='s' id='color' class='postform' &gt; &lt;option value='' selected='selected'&gt;All&lt;/option&gt; &lt;option class="level-0" value="red"&gt;red&lt;/option&gt; &lt;option class="level-0" value="white"&gt;white&lt;/option&gt; &lt;option class="level-0" value="green"&gt;green&lt;/option&gt; &lt;/select&gt; &lt;input type="submit" id="searchsubmit" value="Search" /&gt; &lt;/div&gt; &lt;/form&gt; </code></pre> <p>Is there a way to replace <strong>&amp;sn=</strong> with <strong>+</strong> ?</p> <p>I have tried</p> <pre><code>$_get = str_replace('&amp;sn=', '+', $_get); </code></pre> <p>But that didn't work.</p> <p>The working answer was given by Wgaffa and is, but it does not work with IE or Firefox :(</p> <pre><code>&lt;script type="text/javascript" charset="utf-8"&gt; function add_criteria (el) { search = document.getElementById('search_criteria'); search.value = document.getElementById('type').value + " " + document.getElementById('color').value; } &lt;/script&gt; &lt;form role="search" method="get" id="searchform" action="&lt;?php bloginfo('siteurl'); ?&gt;"&gt; &lt;label class="screen-reader-text" for="s"&gt;Search for:&lt;/label&gt; Type &lt;select name='' id='type' class='postform' onchange="add_criteria(this);"&gt; &lt;option value='' selected='selected'&gt;All&lt;/option&gt; &lt;option class="level-0" value="dog"&gt;Dog&lt;/option&gt; &lt;option class="level-0" value="cat"&gt;Cat&lt;/option&gt; &lt;/select&gt; Color &lt;select name='' id='color' class='postform' onchange="add_criteria(this);"&gt; &lt;option value='' selected='selected'&gt;All&lt;/option&gt; &lt;option class="level-0" value="red"&gt;red&lt;/option&gt; &lt;option class="level-0" value="white"&gt;white&lt;/option&gt; &lt;option class="level-0" value="green"&gt;green&lt;/option&gt; &lt;/select&gt; &lt;input type="hidden" id="search_criteria" value="" name="s" /&gt; &lt;input type="submit" id="searchsubmit" value="Search" /&gt; &lt;/div&gt; &lt;/form&gt; </code></pre>
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