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		<h1>Open Power Template 2.0</h1>
		<h2>compileExpression()</h2>
		<p class="generated">@ 02.09.2010</p>
		<p class="location"><a href="index.html"><strong>User manual</strong></a> &raquo; <a href="api.html">API Reference</a> &raquo; <a href="api.opt-compiler-class.html">Opt_Compiler_Class</a> &raquo; <a href="api.opt-compiler-class.compile-expression.html">Opt_Compiler_Class::compileExpression()</a></p>
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	<div id="content"><dl class="location"><dt><a href="api.opt-compiler-class.html">7.5. Opt_Compiler_Class class</a><br/>7.5.6. compileExpression()</dt><dd class="prev">7.5.5. compile()<br/><a href="api.opt-compiler-class.compile.html">&laquo; Previous</a></dd><dd class="next">7.5.7. component()<br/><a href="api.opt-compiler-class.component.html">Next &raquo;</a></dd></dl>	<h1>7.5.6. compileExpression()</h1><div class="tf_reference"><table><tr><th>Reference</th><td><code>array compileExpression(string &$expression [, $allowAssignment = false [, $escaping = self::ESCAPE_ON]])</code></td></tr></table><hr/></div><p>It compiles given OPT expression <code>$expression</code> to correct PHP expression. Additional parameters:</p>

<ol>
<li><code>$allowAssignment</code> - if on, it is allowed to use an assignment operator in expression.</li>
<li><code>$escaping</code> - if on, the expression is sent to <a href="api.opt-compiler-class.escape.html" title="7.5.10. Opt_Compiler_Class::escape()">Opt_Compiler_Class::escape()</a>.</li>
</ol>

<p>The returned value is an array consisting of the compiled expression and extra information concerning it:</p>

<dl>
<dt><code>$array[0]</code></dt>
<dd>(string) The compiled expression</dd>

<dt><code>$array[1]</code></dt>
<dd>(boolean) Whether the assignment operator is used.</dd>

<dt><code>$array[2]</code></dt>
<dd>(boolean) Whether the expression is actually a single variable</dd>

<dt><code>$array[3]</code></dt>
<dd>(string) If the escaping is enabled, here we have the unescaped expression</dd>
</dl>
<dl class="location location-bottom"><dt>7.5.6. compileExpression()<br/><a href="api.opt-compiler-class.html">7.5. Opt_Compiler_Class class</a></dt><dd class="prev"><a href="api.opt-compiler-class.compile.html">&laquo; Previous</a><br/>7.5.5. compile()</dd><dd class="next"><a href="api.opt-compiler-class.component.html">Next &raquo;</a><br/>7.5.7. component()</dd></dl>		</div>
	
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