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<title>Acquires a strong reference on that object</title>
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<h1 class="refname">Weakref::acquire</h1>
<p class="verinfo">(PECL weakref >= 0.1.0)</p><p class="refpurpose"><span class="refname">Weakref::acquire</span> — <span class="dc-title">Acquires a strong reference on that object</span></p>
</div>
<div class="refsect1 description" id="refsect1-weakref.acquire-description">
<h3 class="title">Description</h3>
<div class="methodsynopsis dc-description">
<span class="modifier">public</span> <span class="type">bool</span> <span class="methodname"><strong>Weakref::acquire</strong></span>
( <span class="methodparam">void</span>
)</div>
<p class="para rdfs-comment">
Acquires a strong reference on that object, virtually turning the weak
reference into a strong one.
</p>
</div>
<div class="refsect1 parameters" id="refsect1-weakref.acquire-parameters">
<h3 class="title">Parameters</h3>
<p class="para">This function has no parameters.</p>
</div>
<div class="refsect1 returnvalues" id="refsect1-weakref.acquire-returnvalues">
<h3 class="title">Return Values</h3>
<p class="para">
Returns <strong><code>TRUE</code></strong> if the reference was valid and could be turned into a strong
reference, <strong><code>FALSE</code></strong> otherwise.
</p>
</div>
<div class="refsect1 examples" id="refsect1-weakref.acquire-examples">
<h3 class="title">Examples</h3>
<p class="para">
<div class="example" id="example-549">
<p><strong>Example #1 <span class="methodname"><strong>Weakref::acquire()</strong></span> example</strong></p>
<div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB"><?php<br /></span><span style="color: #007700">class </span><span style="color: #0000BB">MyClass </span><span style="color: #007700">{<br /> public function </span><span style="color: #0000BB">__destruct</span><span style="color: #007700">() {<br /> echo </span><span style="color: #DD0000">"Destroying object!\n"</span><span style="color: #007700">;<br /> }<br />}<br /><br /></span><span style="color: #0000BB">$o1 </span><span style="color: #007700">= new </span><span style="color: #0000BB">MyClass</span><span style="color: #007700">;<br /><br /></span><span style="color: #0000BB">$r1 </span><span style="color: #007700">= new </span><span style="color: #0000BB">Weakref</span><span style="color: #007700">(</span><span style="color: #0000BB">$o1</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">$r1</span><span style="color: #007700">-></span><span style="color: #0000BB">acquire</span><span style="color: #007700">();<br /><br />echo </span><span style="color: #DD0000">"Unsetting o1...\n"</span><span style="color: #007700">;<br />unset(</span><span style="color: #0000BB">$o1</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">$o2 </span><span style="color: #007700">= </span><span style="color: #0000BB">$r1</span><span style="color: #007700">-></span><span style="color: #0000BB">get</span><span style="color: #007700">();<br /><br /></span><span style="color: #0000BB">$r1</span><span style="color: #007700">-></span><span style="color: #0000BB">release</span><span style="color: #007700">();<br /><br />echo </span><span style="color: #DD0000">"Unsetting o2...\n"</span><span style="color: #007700">;<br />unset(</span><span style="color: #0000BB">$o2</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">?></span>
</span>
</code></div>
</div>
<div class="example-contents"><p>The above example will output:</p></div>
<div class="example-contents screen">
<div class="cdata"><pre>
Unsetting o1...
Unsetting o2...
Destroying object!
</pre></div>
</div>
</div>
</p>
<p class="para">
<div class="example" id="example-550">
<p><strong>Example #2 Nested acquire/release example</strong></p>
<div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB"><?php<br /></span><span style="color: #007700">class </span><span style="color: #0000BB">MyClass </span><span style="color: #007700">{<br /> public function </span><span style="color: #0000BB">__destruct</span><span style="color: #007700">() {<br /> echo </span><span style="color: #DD0000">"Destroying object!\n"</span><span style="color: #007700">;<br /> }<br />}<br /><br /></span><span style="color: #0000BB">$o1 </span><span style="color: #007700">= new </span><span style="color: #0000BB">MyClass</span><span style="color: #007700">;<br /><br /></span><span style="color: #0000BB">$r1 </span><span style="color: #007700">= new </span><span style="color: #0000BB">Weakref</span><span style="color: #007700">(</span><span style="color: #0000BB">$o1</span><span style="color: #007700">);<br /><br />echo </span><span style="color: #DD0000">"Acquiring...\n"</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$r1</span><span style="color: #007700">-></span><span style="color: #0000BB">acquire</span><span style="color: #007700">();<br /><br />echo </span><span style="color: #DD0000">" Unsetting...\n"</span><span style="color: #007700">;<br />unset(</span><span style="color: #0000BB">$o1</span><span style="color: #007700">);<br /><br />echo </span><span style="color: #DD0000">" Acquiring...\n"</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$r1</span><span style="color: #007700">-></span><span style="color: #0000BB">acquire</span><span style="color: #007700">();<br /><br />echo </span><span style="color: #DD0000">" Acquiring...\n"</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$r1</span><span style="color: #007700">-></span><span style="color: #0000BB">acquire</span><span style="color: #007700">();<br /><br />echo </span><span style="color: #DD0000">" Releasing...\n"</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$r1</span><span style="color: #007700">-></span><span style="color: #0000BB">release</span><span style="color: #007700">();<br /><br />echo </span><span style="color: #DD0000">" Releasing...\n"</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$r1</span><span style="color: #007700">-></span><span style="color: #0000BB">release</span><span style="color: #007700">();<br /><br />echo </span><span style="color: #DD0000">"Releasing...\n"</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$r1</span><span style="color: #007700">-></span><span style="color: #0000BB">release</span><span style="color: #007700">();<br /><br /></span><span style="color: #0000BB">?></span>
</span>
</code></div>
</div>
<div class="example-contents"><p>The above example will output:</p></div>
<div class="example-contents screen">
<div class="cdata"><pre>
Acquiring...
Unsetting...
Acquiring...
Acquiring...
Releasing...
Releasing...
Releasing...
Destroying object!
</pre></div>
</div>
</div>
</p>
</div>
<div class="refsect1 seealso" id="refsect1-weakref.acquire-seealso">
<h3 class="title">See Also</h3>
<p class="para">
<ul class="simplelist">
<li class="member"> <span class="methodname"><a href="weakref.release.html" class="methodname" rel="rdfs-seeAlso">Weakref::release()</a> - Releases a previously acquired reference</span></li>
</ul>
</p>
</div>
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