Generate a signature

# 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

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