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ReflectionFunctionAbstract::getNumberOfParameters

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

ReflectionFunctionAbstract::getNumberOfParametersGets number of parameters

Description

public ReflectionFunctionAbstract::getNumberOfParameters(): int

Get the number of parameters that a function defines, both optional and required.

Parameters

This function has no parameters.

Return Values

The number of parameters.

See Also

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User Contributed Notes 2 notes

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5
Robert Pitt ( LitePHP )
13 years ago
Working on a new MVC Application Framework i use this method to check how many arguments are required before calling the sub method!

Example

<?php
$this
->method_args_count = $this->CReflection
->getMethod($Route->getMethod())
->
getNumberOfParameters();
//Maybe be 5 but if uri is /controller/method/single_param/ we only of 1
$this->params = $Route->getParams(); //0 in some cases

if($this->method_args_count > count($this->params))
{
$this->difference = ($this->method_args_count - count($this->params));
for(
$i=0;$i<=$this->difference;$i++)
{
$this->params[] = false;
}
}

//Call the method with correct amount of params
// but as false for params that have not been passed!
call_user_func_array(array(new $this->obj,$Route->getMethod()),$this->params);
?>
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0
8ctopus
3 years ago
$reflection = new ReflectionFunction('implode');
echo $reflection->getNumberOfParameters();
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