le="color: #007700">,</span><span style="color: #0000BB">$expire</span><span style="color: #007700">)&nbsp;:&nbsp;</span><span style="color: #0000BB">false</span><span style="color: #007700">;<br />}</span>
</span>
</code></div>
</div>
<p>Stores a value identified by a key into cache if the cache does not contain this key.
This is the implementation of the method declared in the parent class.</p>


<div class="detailHeader" id="deleteValue-detail">
deleteValue()
<span class="detailHeaderTag">
method
</span>