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<title>Dynamically changes the code of the given method</title>
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<h1 class="refname">runkit_method_redefine</h1>
<p class="verinfo">(PECL runkit >= 0.7.0)</p><p class="refpurpose"><span class="refname">runkit_method_redefine</span> — <span class="dc-title">Dynamically changes the code of the given method</span></p>
</div>
<div class="refsect1 description" id="refsect1-function.runkit-method-redefine-description">
<h3 class="title">Description</h3>
<div class="methodsynopsis dc-description">
<span class="type">bool</span> <span class="methodname"><strong>runkit_method_redefine</strong></span>
( <span class="methodparam"><span class="type">string</span> <code class="parameter">$classname</code></span>
, <span class="methodparam"><span class="type">string</span> <code class="parameter">$methodname</code></span>
, <span class="methodparam"><span class="type">string</span> <code class="parameter">$args</code></span>
, <span class="methodparam"><span class="type">string</span> <code class="parameter">$code</code></span>
[, <span class="methodparam"><span class="type">int</span> <code class="parameter">$flags</code><span class="initializer"> = RUNKIT_ACC_PUBLIC</span></span>
] )</div>
<blockquote class="note"><p><strong class="note">Note</strong>: <span class="simpara">This function cannot
be used to manipulate the currently running (or chained) method.</span>
</p></blockquote>
<div class="warning"><strong class="warning">Warning</strong><p class="simpara">This function is
<em class="emphasis">EXPERIMENTAL</em>. The behaviour of this function, its name, and
surrounding documentation may change without notice in a future release of PHP.
This function should be used at your own risk.
</p></div>
</div>
<div class="refsect1 parameters" id="refsect1-function.runkit-method-redefine-parameters">
<h3 class="title">Parameters</h3>
<p class="para">
<dl>
<dt>
<span class="term"><em><code class="parameter">classname</code></em></span>
<dd>
<p class="para">
The class in which to redefine the method
</p>
</dd>
</dt>
<dt>
<span class="term"><em><code class="parameter">methodname</code></em></span>
<dd>
<p class="para">
The name of the method to redefine
</p>
</dd>
</dt>
<dt>
<span class="term"><em><code class="parameter">args</code></em></span>
<dd>
<p class="para">
Comma-delimited list of arguments for the redefined method
</p>
</dd>
</dt>
<dt>
<span class="term"><em><code class="parameter">code</code></em></span>
<dd>
<p class="para">
The new code to be evaluated when <em><code class="parameter">methodname</code></em>
is called
</p>
</dd>
</dt>
<dt>
<span class="term"><em><code class="parameter">flags</code></em></span>
<dd>
<p class="para">
The redefined method can be
<strong><code>RUNKIT_ACC_PUBLIC</code></strong>,
<strong><code>RUNKIT_ACC_PROTECTED</code></strong> or
<strong><code>RUNKIT_ACC_PRIVATE</code></strong>
</p>
<blockquote class="note"><p><strong class="note">Note</strong>:
<p class="para">
This parameter is only used as of PHP 5, because, prior to this,
all methods were public.
</p>
</p></blockquote>
</dd>
</dt>
</dl>
</p>
</div>
<div class="refsect1 returnvalues" id="refsect1-function.runkit-method-redefine-returnvalues">
<h3 class="title">Return Values</h3>
<p class="para">
Returns <strong><code>TRUE</code></strong> on success or <strong><code>FALSE</code></strong> on failure.
</p>
</div>
<div class="refsect1 examples" id="refsect1-function.runkit-method-redefine-examples">
<h3 class="title">Examples</h3>
<p class="para">
<div class="example" id="example-541">
<p><strong>Example #1 <span class="function"><strong>runkit_method_redefine()</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">Example </span><span style="color: #007700">{<br /> function </span><span style="color: #0000BB">foo</span><span style="color: #007700">() {<br /> return </span><span style="color: #DD0000">"foo!\n"</span><span style="color: #007700">;<br /> }<br />}<br /><br /></span><span style="color: #FF8000">// create an Example object<br /></span><span style="color: #0000BB">$e </span><span style="color: #007700">= new </span><span style="color: #0000BB">Example</span><span style="color: #007700">();<br /><br /></span><span style="color: #FF8000">// output Example::foo() (before redefine)<br /></span><span style="color: #007700">echo </span><span style="color: #DD0000">"Before: " </span><span style="color: #007700">. </span><span style="color: #0000BB">$e</span><span style="color: #007700">-></span><span style="color: #0000BB">foo</span><span style="color: #007700">();<br /><br /></span><span style="color: #FF8000">// Redefine the 'foo' method<br /></span><span style="color: #0000BB">runkit_method_redefine</span><span style="color: #007700">(<br /> </span><span style="color: #DD0000">'Example'</span><span style="color: #007700">,<br /> </span><span style="color: #DD0000">'foo'</span><span style="color: #007700">,<br /> </span><span style="color: #DD0000">''</span><span style="color: #007700">,<br /> </span><span style="color: #DD0000">'return "bar!\n";'</span><span style="color: #007700">,<br /> </span><span style="color: #0000BB">RUNKIT_ACC_PUBLIC<br /></span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// output Example::foo() (after redefine)<br /></span><span style="color: #007700">echo </span><span style="color: #DD0000">"After: " </span><span style="color: #007700">. </span><span style="color: #0000BB">$e</span><span style="color: #007700">-></span><span style="color: #0000BB">foo</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>
Before: foo!
After: bar!
</pre></div>
</div>
</div>
</p>
</div>
<div class="refsect1 seealso" id="refsect1-function.runkit-method-redefine-seealso">
<h3 class="title">See Also</h3>
<p class="para">
<ul class="simplelist">
<li class="member"> <span class="function"><a href="function.runkit-method-add.html" class="function" rel="rdfs-seeAlso">runkit_method_add()</a> - Dynamically adds a new method to a given class</span></li>
<li class="member"> <span class="function"><a href="function.runkit-method-copy.html" class="function" rel="rdfs-seeAlso">runkit_method_copy()</a> - Copies a method from class to another</span></li>
<li class="member"> <span class="function"><a href="function.runkit-method-remove.html" class="function" rel="rdfs-seeAlso">runkit_method_remove()</a> - Dynamically removes the given method</span></li>
<li class="member"> <span class="function"><a href="function.runkit-method-rename.html" class="function" rel="rdfs-seeAlso">runkit_method_rename()</a> - Dynamically changes the name of the given method</span></li>
<li class="member"> <span class="function"><a href="function.runkit-function-redefine.html" class="function" rel="rdfs-seeAlso">runkit_function_redefine()</a> - Replace a function definition with a new implementation</span></li>
</ul>
</p>
</div>
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