<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> <title>The ReflectionParameter class</title> </head> <body><div class="manualnavbar" style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="reflectionobject.export.html">ReflectionObject::export</a></div> <div class="next" style="text-align: right; float: right;"><a href="reflectionparameter.allowsnull.html">ReflectionParameter::allowsNull</a></div> <div class="up"><a href="book.reflection.html">Reflection</a></div> <div class="home"><a href="index.html">PHP Manual</a></div> </div><hr /><div id="class.reflectionparameter" class="reference"> <h1 class="title">The ReflectionParameter class</h1> <div class="partintro"><p class="verinfo">(PHP 5)</p> <div class="section" id="reflectionparameter.intro"> <h2 class="title">Introduction</h2> <p class="para"> The <strong class="classname">ReflectionParameter</strong> class retrieves information about function's or method's parameters. </p> <p class="para"> To introspect function parameters, first create an instance of the <a href="class.reflectionfunction.html" class="classname">ReflectionFunction</a> or <a href="class.reflectionmethod.html" class="classname">ReflectionMethod</a> classes and then use their <span class="methodname"><a href="reflectionfunctionabstract.getparameters.html" class="methodname">ReflectionFunctionAbstract::getParameters()</a></span> method to retrieve an array of parameters. </p> </div> <div class="section" id="reflectionparameter.synopsis"> <h2 class="title">Class synopsis</h2> <div class="classsynopsis"> <div class="ooclass"></div> <div class="classsynopsisinfo"> <span class="ooclass"> <strong class="classname">ReflectionParameter</strong> </span> <span class="oointerface">implements <span class="interfacename"><a href="class.reflector.html" class="interfacename">Reflector</a></span> </span> {</div> <div class="classsynopsisinfo classsynopsisinfo_comment">/* Properties */</div> <div class="fieldsynopsis"> <span class="modifier">public</span> <var class="varname"><a href="class.reflectionparameter.html#reflectionparameter.props.name">$<var class="varname">name</var></a></var> ;</div> <div class="classsynopsisinfo classsynopsisinfo_comment">/* Methods */</div> <div class="methodsynopsis dc-description"> <span class="modifier">public</span> <span class="type">bool</span> <span class="methodname"><a href="reflectionparameter.allowsnull.html" class="methodname">allowsNull</a></span> ( <span class="methodparam">void</span> )</div> <div class="methodsynopsis dc-description"> <span class="modifier">public</span> <span class="type">bool</span> <span class="methodname"><a href="reflectionparameter.canbepassedbyvalue.html" class="methodname">canBePassedByValue</a></span> ( <span class="methodparam">void</span> )</div> <div class="methodsynopsis dc-description"> <span class="modifier">final</span> <span class="modifier">private</span> <span class="type">void</span> <span class="methodname"><a href="reflectionparameter.clone.html" class="methodname">__clone</a></span> ( <span class="methodparam">void</span> )</div> <div class="methodsynopsis dc-description"> <span class="modifier">public</span> <span class="methodname"><a href="reflectionparameter.construct.html" class="methodname">__construct</a></span> ( <span class="methodparam"><span class="type">string</span> <code class="parameter">$function</code></span> , <span class="methodparam"><span class="type">string</span> <code class="parameter">$parameter</code></span> )</div> <div class="methodsynopsis dc-description"> <span class="modifier">public</span> <span class="modifier">static</span> <span class="type">string</span> <span class="methodname"><a href="reflectionparameter.export.html" class="methodname">export</a></span> ( <span class="methodparam"><span class="type">string</span> <code class="parameter">$function</code></span> , <span class="methodparam"><span class="type">string</span> <code class="parameter">$parameter</code></span> [, <span class="methodparam"><span class="type">bool</span> <code class="parameter">$return</code></span> ] )</div> <div class="methodsynopsis dc-description"> <span class="modifier">public</span> <span class="type">ReflectionClass</span> <span class="methodname"><a href="reflectionparameter.getclass.html" class="methodname">getClass</a></span> ( <span class="methodparam">void</span> )</div> <div class="methodsynopsis dc-description"> <span class="modifier">public</span> <span class="type">ReflectionClass</span> <span class="methodname"><a href="reflectionparameter.getdeclaringclass.html" class="methodname">getDeclaringClass</a></span> ( <span class="methodparam">void</span> )</div> <div class="methodsynopsis dc-description"> <span class="modifier">public</span> <span class="type">ReflectionFunctionAbstract</span> <span class="methodname"><a href="reflectionparameter.getdeclaringfunction.html" class="methodname">getDeclaringFunction</a></span> ( <span class="methodparam">void</span> )</div> <div class="methodsynopsis dc-description"> <span class="modifier">public</span> <span class="type">mixed</span> <span class="methodname"><a href="reflectionparameter.getdefaultvalue.html" class="methodname">getDefaultValue</a></span> ( <span class="methodparam">void</span> )</div> <div class="methodsynopsis dc-description"> <span class="modifier">public</span> <span class="type">string</span> <span class="methodname"><a href="reflectionparameter.getdefaultvalueconstantname.html" class="methodname">getDefaultValueConstantName</a></span> ( <span class="methodparam">void</span> )</div> <div class="methodsynopsis dc-description"> <span class="modifier">public</span> <span class="type">string</span> <span class="methodname"><a href="reflectionparameter.getname.html" class="methodname">getName</a></span> ( <span class="methodparam">void</span> )</div> <div class="methodsynopsis dc-description"> <span class="modifier">public</span> <span class="type">int</span> <span class="methodname"><a href="reflectionparameter.getposition.html" class="methodname">getPosition</a></span> ( <span class="methodparam">void</span> )</div> <div class="methodsynopsis dc-description"> <span class="modifier">public</span> <span class="type">bool</span> <span class="methodname"><a href="reflectionparameter.isarray.html" class="methodname">isArray</a></span> ( <span class="methodparam">void</span> )</div> <div class="methodsynopsis dc-description"> <span class="modifier">public</span> <span class="type">bool</span> <span class="methodname"><a href="reflectionparameter.iscallable.html" class="methodname">isCallable</a></span> ( <span class="methodparam">void</span> )</div> <div class="methodsynopsis dc-description"> <span class="modifier">public</span> <span class="type">bool</span> <span class="methodname"><a href="reflectionparameter.isdefaultvalueavailable.html" class="methodname">isDefaultValueAvailable</a></span> ( <span class="methodparam">void</span> )</div> <div class="methodsynopsis dc-description"> <span class="modifier">public</span> <span class="type">bool</span> <span class="methodname"><a href="reflectionparameter.isdefaultvalueconstant.html" class="methodname">isDefaultValueConstant</a></span> ( <span class="methodparam">void</span> )</div> <div class="methodsynopsis dc-description"> <span class="modifier">public</span> <span class="type">bool</span> <span class="methodname"><a href="reflectionparameter.isoptional.html" class="methodname">isOptional</a></span> ( <span class="methodparam">void</span> )</div> <div class="methodsynopsis dc-description"> <span class="modifier">public</span> <span class="type">bool</span> <span class="methodname"><a href="reflectionparameter.ispassedbyreference.html" class="methodname">isPassedByReference</a></span> ( <span class="methodparam">void</span> )</div> <div class="methodsynopsis dc-description"> <span class="modifier">public</span> <span class="type">string</span> <span class="methodname"><a href="reflectionparameter.tostring.html" class="methodname">__toString</a></span> ( <span class="methodparam">void</span> )</div> }</div> </div> <div class="section" id="reflectionparameter.props"> <h2 class="title">Properties</h2> <dl> <dt id="reflectionparameter.props.name"> <span class="term"><var class="varname"><var class="varname">name</var></var></span> <dd> <p class="para"> Name of the parameter. Read-only, throws <a href="class.reflectionexception.html" class="classname">ReflectionException</a> in attempt to write. </p> </dd> </dt> </dl> </div> </div> <h2>Table of Contents</h2><ul class="chunklist chunklist_reference"><li><a href="reflectionparameter.allowsnull.html">ReflectionParameter::allowsNull</a> — Checks if null is allowed</li><li><a href="reflectionparameter.canbepassedbyvalue.html">ReflectionParameter::canBePassedByValue</a> — Returns whether this parameter can be passed by value</li><li><a href="reflectionparameter.clone.html">ReflectionParameter::__clone</a> — Clone</li><li><a href="reflectionparameter.construct.html">ReflectionParameter::__construct</a> — Construct</li><li><a href="reflectionparameter.export.html">ReflectionParameter::export</a> — Exports</li><li><a href="reflectionparameter.getclass.html">ReflectionParameter::getClass</a> — Get the type hinted class</li><li><a href="reflectionparameter.getdeclaringclass.html">ReflectionParameter::getDeclaringClass</a> — Gets declaring class</li><li><a href="reflectionparameter.getdeclaringfunction.html">ReflectionParameter::getDeclaringFunction</a> — Gets declaring function</li><li><a href="reflectionparameter.getdefaultvalue.html">ReflectionParameter::getDefaultValue</a> — Gets default parameter value</li><li><a href="reflectionparameter.getdefaultvalueconstantname.html">ReflectionParameter::getDefaultValueConstantName</a> — Returns the default value's constant name if default value is constant or null</li><li><a href="reflectionparameter.getname.html">ReflectionParameter::getName</a> — Gets parameter name</li><li><a href="reflectionparameter.getposition.html">ReflectionParameter::getPosition</a> — Gets parameter position</li><li><a href="reflectionparameter.isarray.html">ReflectionParameter::isArray</a> — Checks if parameter expects an array</li><li><a href="reflectionparameter.iscallable.html">ReflectionParameter::isCallable</a> — Returns whether parameter MUST be callable</li><li><a href="reflectionparameter.isdefaultvalueavailable.html">ReflectionParameter::isDefaultValueAvailable</a> — Checks if a default value is available</li><li><a href="reflectionparameter.isdefaultvalueconstant.html">ReflectionParameter::isDefaultValueConstant</a> — Returns whether the default value of this parameter is constant</li><li><a href="reflectionparameter.isoptional.html">ReflectionParameter::isOptional</a> — Checks if optional</li><li><a href="reflectionparameter.ispassedbyreference.html">ReflectionParameter::isPassedByReference</a> — Checks if passed by reference</li><li><a href="reflectionparameter.tostring.html">ReflectionParameter::__toString</a> — To string</li></ul> </div> <hr /><div class="manualnavbar" style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="reflectionobject.export.html">ReflectionObject::export</a></div> <div class="next" style="text-align: right; float: right;"><a href="reflectionparameter.allowsnull.html">ReflectionParameter::allowsNull</a></div> <div class="up"><a href="book.reflection.html">Reflection</a></div> <div class="home"><a href="index.html">PHP Manual</a></div> </div></body></html>