I am in the process of creating an associative array called errMsgs[] that will hold error messages that correspond to a particular <input> field error. Which form of testing errMsgs[] is more correct, faster, and safer? Does either method have important advantages or disadvantages?
Contact Form Code Snippet: Focus --> The third <td></td> in a table with three columns as in ...
(column1) (column2) (column3) <----Focus of this code snippet.
--------- ---------- ----------
Where column1 is a <label></label> inside of a <td></td>. Where column2 is an <input /> control inside of a <td></td>. Where column3 is an empty <td></td>, filled conditionally based on the errMsgs[] associative array.
<tr>
<td>
<label>
</label>
</td>
<td>
<input />
</td>
<td>
<?php
if($errMsgs['firstName'])
{
echo $errMsgs['firstName']; //This element is not from user input.
}
?>
</td>
</tr>
<tr>
<td>
<label>
</label>
</td>
<td>
<input />
</td>
<td>
<?php
if(isset($errMsgs['firstName']))
{
echo $errMsgs['firstName']; //This element is not from user input.
}
?>
</td>
</tr>
Escaping and coding style issues aside, which skeleton is superior? Which have you used in the past? I want to use the best way.
You could try it.
if($errMsgs['firstName']) will return a notice when the key firstName doesn't exist. So use isset() instead.
Good question. The language construct isset() is the way to go here.