## 例

`

     mixed openssl_pkcs7_verify ( string $filename , int $flags [, string $outfilename [, array $cainfo [, string $extracerts [, string $content ]]]] )

`

## 説明

openssl_pkcs7_verify() reads the S/MIME message contained in the given file and examines the digital signature.

## 戻り値

Returns TRUE if the signature is verified, FALSE if it is not correct (the message has been tampered with, or the signing certificate is invalid), or -1 on error.