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ReflectionFunctionAbstract::getNumberOfRequiredParameters

(PHP 5 >= 5.3.0, PHP 7, PHP 8)

ReflectionFunctionAbstract::getNumberOfRequiredParameters — Gets number of required parameters

Description

public ReflectionFunctionAbstract::getNumberOfRequiredParameters(): int

Parameters

This function has no parameters.

Return Values

The number of required parameters.

Found A Problem?

cesar at magic3w dot com ¶

9 years ago

`It's interesting to note that this function will treat optional parameters that come before a required parameter as required too. This is good since it allows you to verify that the function will be receiving enough parameters for the it to work, regardless where they are located.

b,b, b,c = null) {} }//Create the reflection $r = new \ReflectionMethod('MyTest', 'test'); $r2 = new \ReflectionMethod('MyTest', 'test2');//Verify the numbers echo 'Test: ' . $r->getNumberOfRequiredParameters()); //Output: 2 echo 'Test2: ' . $r->getNumberOfRequiredParameters()); //Output: 2?>

sebastian at sebastian-eiweleit dot de ¶

11 years ago

<?php namespace ExampleWorld; // The Class class helloWorld { /* Method with two required arguments */public function requiredTwoArguments ( <math xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mi>v</mi><mi>a</mi><mi>r</mi><mn>1</mn><mo separator="true">,</mo></mrow><annotation encoding="application/x-tex">var1, </annotation></semantics></math>var1,var2 ) { // Some code ... }/* Method with two arguments, but just one is required */ public function requiredOneArgument ( <math xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mi>v</mi><mi>a</mi><mi>r</mi><mn>1</mn><mo separator="true">,</mo></mrow><annotation encoding="application/x-tex">var1, </annotation></semantics></math>var1,var2 = false ) { // Some code ... } }$r = new \ReflectionMethod ( 'ExampleWorld\helloWorld', 'requiredTwoArguments' ); echo <math xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mi>r</mi><mo>−</mo><mo>></mo><mi>g</mi><mi>e</mi><mi>t</mi><mi>N</mi><mi>u</mi><mi>m</mi><mi>b</mi><mi>e</mi><mi>r</mi><mi>O</mi><mi>f</mi><mi>R</mi><mi>e</mi><mi>q</mi><mi>u</mi><mi>i</mi><mi>r</mi><mi>e</mi><mi>d</mi><mi>P</mi><mi>a</mi><mi>r</mi><mi>a</mi><mi>m</mi><mi>e</mi><mi>t</mi><mi>e</mi><mi>r</mi><mi>s</mi><mo stretchy="false">(</mo><mo stretchy="false">)</mo><mo separator="true">;</mo></mrow><annotation encoding="application/x-tex">r->getNumberOfRequiredParameters ();</annotation></semantics></math>r−>getNumberOfRequiredParameters();r = new \ReflectionMethod ( 'ExampleWorld\helloWorld', 'requiredOneArgument' ); echo $r->getNumberOfRequiredParameters ();// Output: 2 1