Oihana PHP

getFunctionInfo.php

Table of Contents

Functions

getFunctionInfo()  : array<string|int, mixed>|null
Returns detailed reflection information about a given function or method.

Functions

getFunctionInfo()

Returns detailed reflection information about a given function or method.

getFunctionInfo(callable|string $callable) : array<string|int, mixed>|null

This function uses PHP's Reflection API to retrieve metadata about a callable (function, method, or closure), including its namespace, file location, line numbers, and docblock comment.

Parameters
$callable : callable|string

The callable to reflect: function name, closure, or method (as string or array).

Tags
example 
$info = getFunctionInfo('strlen');
print_r($info);

$infoMethod = getFunctionInfo([DateTime::class, 'format']);
print_r($infoMethod);

$closure = function($x) { return $x * 2; };
$infoClosure = getFunctionInfo($closure);
print_r($infoClosure);
author

Marc Alcaraz (ekameleon)

since
1.0.0
Return values
array<string|int, mixed>|null —

Returns an associative array of function details if the function exists, or null otherwise. The array contains:

  • 'name' : Full function or method name including class if applicable.
  • 'namespace' : Namespace the function or method belongs to.
  • 'alias' : Short function or method name without namespace.
  • 'file' : Path to the file where the function or method is defined.
  • 'startLine' : The starting line number of the function or method definition.
  • 'endLine' : The ending line number of the function or method definition.
  • 'isInternal' : Whether the function or method is internal to PHP.
  • 'isUser' : Whether the function or method is user-defined.
  • 'comment' : The function's or method's docblock comment, or null if none.

        

        
    




    

    

                                

                

                            
    

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