# OAuth::generateSignature

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OAuth::generateSignature — Generate a signature

### Description

public OAuth::generateSignature ( string `$http_method` , string `$url` [, mixed `$extra_parameters` ] ) : string|false

Generate a signature based on the final HTTP method, URL and a string/array of parameters.

### Parameters

`http_method`

  HTTP method for request

`url`

  URL for request

`extra_parameters`

  String or array of additional parameters.

### Return Values

A string containing the generated signature or `FALSE` on failure