array ( 0 => 'index.php', 1 => 'PHP Manual', ), 'head' => array ( 0 => 'UTF-8', 1 => 'zh', ), 'this' => array ( 0 => 'reflectionfunction.tostring.php', 1 => 'ReflectionFunction::__toString', 2 => 'Returns the string representation of the ReflectionFunction object', ), 'up' => array ( 0 => 'class.reflectionfunction.php', 1 => 'ReflectionFunction', ), 'prev' => array ( 0 => 'reflectionfunction.isdisabled.php', 1 => 'ReflectionFunction::isDisabled', ), 'next' => array ( 0 => 'class.reflectionfunctionabstract.php', 1 => 'ReflectionFunctionAbstract', ), 'alternatives' => array ( ), 'source' => array ( 'lang' => 'en', 'path' => 'reference/reflection/reflectionfunction/tostring.xml', ), 'history' => array ( ), ); $setup["toc"] = $TOC; $setup["toc_deprecated"] = $TOC_DEPRECATED; $setup["parents"] = $PARENTS; manual_setup($setup); contributors($setup); ?>
(PHP 5, PHP 7, PHP 8)
ReflectionFunction::__toString — Returns the string representation of the ReflectionFunction object
Get a human-readable description of the function, its parameters and return values.
此函数没有参数。
The string.
示例 #1 ReflectionFunction::__toString() example
<?php
function title($title, $name)
{
    return sprintf("%s. %s\r\n", $title, $name);
}
echo new ReflectionFunction('title');
?>以上示例的输出类似于:
Function [ <user> function title ] {
  @@ Command line code 1 - 1
  - Parameters [2] {
    Parameter #0 [ <required> $title ]
    Parameter #1 [ <required> $name ]
  }
}