Compatibility problem in PHP?
<p>I am facing an abnormal problem in a site. Where when I was trying to <strong>login</strong> with "<em>Chrome</em>", it is <strong><em>running fine</em></strong>. But when I am trying to login with "<strong>Firefox</strong>" or "<strong>Internet Explorer</strong>" it is <strong><em>not allowing me to login</em></strong>.</p>

<p>In <strong>Firefox</strong> it is showing <strong>error</strong> as :</p>

<blockquote>
  <p>Mozilla/5.0 (Windows NT 6.1; rv:5.0) Gecko/20100101 Firefox/5.0</p>
</blockquote>

<p>And in <strong>Internet Explorer</strong> it showing :</p>

<blockquote>
  <p>Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0; SLCC2;
  .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media
  Center PC 6.0; AskTbFXTV5/5.8.0.12304)</p>
</blockquote>

<p>What may be the possble reasons?</p>

<p>Thanks in advance.....</p>
