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Extract public key from certificate and prepare it for use (PHP 4 >= 4.2.0, PHP 5)
resource openssl_pkey_get_public ( mixed certificate )

openssl_get_publickey() extracts the public key from certificate and prepares it for use by other functions.



certificate can be one of the following:

  1. an X.509 certificate resource
  2. a string having the format file://path/to/file.pem. The named file must contain a PEM encoded certificate/private key (it may contain both).
  3. A PEM formatted private key.

Return Values

Returns a positive key resource identifier on success, or FALSE on error.