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<div class="sect1" title="default">
<div class="titlepage"><div><div><h2 class="title" style="clear: both">
<a name="language.modifier.default"></a>default</h2></div></div></div>
<p>
This is used to set a default value for a variable. If the variable
is unset or an empty string, the given default value is printed instead.
Default takes the one argument.
</p>
<p>
</p>
<div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;">
<h3 class="title">Note</h3>
<p>
With <a class="ulink" href="http://php.net/error_reporting" target="_top">
<code class="varname">error_reporting(E_ALL)</code></a>,
undeclared variables will always throw an error within the template.
This function is useful for replacing null or zero length strings.
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<colgroup>
<col align="center">
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<col align="center">
<col>
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<thead><tr>
<th align="center">Parameter Position</th>
<th align="center">Type</th>
<th align="center">Required</th>
<th align="center">Default</th>
<th>Description</th>
</tr></thead>
<tbody><tr>
<td align="center">1</td>
<td align="center">string</td>
<td align="center">No</td>
<td align="center"><span class="emphasis"><em>empty</em></span></td>
<td>This is the default value to output if the
variable is empty.</td>
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<div class="example">
<a name="id3036177"></a><p class="title"><b>Example 5.9. default</b></p>
<div class="example-contents">
<pre class="programlisting">
<?php
$smarty->assign('articleTitle', 'Dealers Will Hear Car Talk at Noon.');
$smarty->assign('email', '');
?>
</pre>
<p>
Where template is:
</p>
<pre class="programlisting">
{$articleTitle|default:'no title'}
{$myTitle|default:'no title'}
{$email|default:'No email address available'}
</pre>
<p>
Will output:
</p>
<pre class="screen">
Dealers Will Hear Car Talk at Noon.
no title
No email address available
</pre>
</div>
</div>
<br class="example-break"><p>
See also the
<a class="link" href="tips.default.var.handling.html" title="Default Variable Handling">default variable handling</a>
and the
<a class="link" href="tips.html#tips.blank.var.handling" title="Blank Variable Handling">blank variable handling</a> pages.
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