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PHP ReflectionParameter::__construct

PHP original manual for ReflectionParameter::__construct [ show | php.net ]

ReflectionParameter::__construct

(PHP 5, PHP 7)

ReflectionParameter::__construct — Construct

Description

public ReflectionParameter::__construct ( string $function , string $parameter )

Constructs a ReflectionParameter class.

Warning

This function is currently not documented; only its argument list is available.

Parameters

function

The function to reflect parameters from.

parameter

The parameter.

Return Values

No value is returned.

Examples

Example #1 Using the ReflectionParameter class

<?php
function foo($a, $b, $c) { }
function bar(Exception $a, &$b, $c) { }
function baz(ReflectionFunction $a, $b = 1, $c = null) { }
function abc() { }

$reflect = new ReflectionFunction('foo');

echo $reflect;

foreach ($reflect->getParameters() as $i => $param) {
    printf(
        "-- Parameter #%d: %s {\n".
        "   Class: %s\n".
        "   Allows NULL: %s\n".
        "   Passed to by reference: %s\n".
        "   Is optional?: %s\n".
        "}\n",
        $i, // $param->getPosition() can be used from PHP 5.2.3
        $param->getName(),
        var_export($param->getClass(), 1),
        var_export($param->allowsNull(), 1),
        var_export($param->isPassedByReference(), 1),
        $param->isOptional() ? 'yes' : 'no'
    );
}
?>

The above example will output something similar to:

Function [ <user> function foo ] {
  @@ /Users/philip/cvs/phpdoc/a 2 - 2

  - Parameters [3] {
    Parameter #0 [ <required> $a ]
    Parameter #1 [ <required> $b ]
    Parameter #2 [ <required> $c ]
  }
}
-- Parameter #0: a {
   Class: NULL
   Allows NULL: true
   Passed to by reference: false
   Is optional?: no
}
-- Parameter #1: b {
   Class: NULL
   Allows NULL: true
   Passed to by reference: false
   Is optional?: no
}
-- Parameter #2: c {
   Class: NULL
   Allows NULL: true
   Passed to by reference: false
   Is optional?: no
}

See Also