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run code in 150+ php & hhvm versions
Bugs & Features
<?php $str='<!doctype html> <html> <head> <title>My Calculator</title> </head> <body align="center"> <b> MY CALCULATOR</b> <table border="0" cellpadding="3" cellspacing="0" align="center"> <tr><td> <form method="POST" action=""> <label for="First number"> First number:</label> </td> <td> <inputtype="text"name="first_num" maxlength="20"/> </td> </tr> <br/> <tr> <td> <label for="Second number"> Second number:</label> </td> <td><input type="text" name="sec_num" maxlength="20"/></td> </tr> <br/> <tr> <td> <input type="submit" name="opt" value="+"/> &nbsp; <input type="submit" name="opt" value="-"/> </td><td> <input type="submit" name="opt" value="*"/> &nbsp; <input type="submit" name="opt" value="/"/> &nbsp; <input type="reset" value="RESET"</td> </form> </tr> </table> </body> </html>'; echo htmlentities($str); ?>
Output for 4.3.0 - 7.1.0
&lt;!doctype html&gt; &lt;html&gt; &lt;head&gt; &lt;title&gt;My Calculator&lt;/title&gt; &lt;/head&gt; &lt;body align=&quot;center&quot;&gt; &lt;b&gt; MY CALCULATOR&lt;/b&gt; &lt;table border=&quot;0&quot; cellpadding=&quot;3&quot; cellspacing=&quot;0&quot; align=&quot;center&quot;&gt; &lt;tr&gt;&lt;td&gt; &lt;form method=&quot;POST&quot; action=&quot;&quot;&gt; &lt;label for=&quot;First number&quot;&gt; First number:&lt;/label&gt; &lt;/td&gt; &lt;td&gt; &lt;inputtype=&quot;text&quot;name=&quot;first_num&quot; maxlength=&quot;20&quot;/&gt; &lt;/td&gt; &lt;/tr&gt; &lt;br/&gt; &lt;tr&gt; &lt;td&gt; &lt;label for=&quot;Second number&quot;&gt; Second number:&lt;/label&gt; &lt;/td&gt; &lt;td&gt;&lt;input type=&quot;text&quot; name=&quot;sec_num&quot; maxlength=&quot;20&quot;/&gt;&lt;/td&gt; &lt;/tr&gt; &lt;br/&gt; &lt;tr&gt; &lt;td&gt; &lt;input type=&quot;submit&quot; name=&quot;opt&quot; value=&quot;+&quot;/&gt; &amp;nbsp; &lt;input type=&quot;submit&quot; name=&quot;opt&quot; value=&quot;-&quot;/&gt; &lt;/td&gt;&lt;td&gt; &lt;input type=&quot;submit&quot; name=&quot;opt&quot; value=&quot;*&quot;/&gt; &amp;nbsp; &lt;input type=&quot;submit&quot; name=&quot;opt&quot; value=&quot;/&quot;/&gt; &amp;nbsp; &lt;input type=&quot;reset&quot; value=&quot;RESET&quot;&lt;/td&gt; &lt;/form&gt; &lt;/tr&gt; &lt;/table&gt; &lt;/body&gt; &lt;/html&gt;