OpenSSL Functions
PHP Manual

openssl_csr_export_to_file

Exports a CSR to a file

Description

bool openssl_csr_export_to_file(OpenSSLCertificateSigningRequeststring $csr, string $output_filename, bool $no_text = true)

openssl_csr_export_to_file takes the Certificate Signing Request represented by csr and saves it in PEM format into the file named by output_filename.

Parameters

csr

See CSR parameters for a list of valid values.

output_filename

Path to the output file.

no_text

The optional parameter notext affects the verbosity of the output; if it is false, then additional human-readable information is included in the output. The default value of notext is true.

Return Values

Returns true on success or false on failure.

Changelog

Version Description
8.0.0 csr accepts an OpenSSLCertificateSigningRequest instance now; previously, a resource of type OpenSSL X.509 CSR was accepted.

Examples

Example #1 openssl_csr_export_to_file() example

<?php
$subject = array(
    "commonName" => "example.com",
);
$private_key = openssl_pkey_new(array(
    "private_key_bits" => 2048,
    "private_key_type" => OPENSSL_KEYTYPE_RSA,
));
$csr = openssl_csr_new($subject, $private_key, array('digest_alg' => 'sha384') );
openssl_pkey_export_to_file($private_key, 'example-priv.key');
// Along with the subject, the CSR contains the public key corresponding to the private key
openssl_csr_export_to_file($csr, 'example-csr.pem');
?>

See Also

  • openssl_csr_export
  • openssl_csr_new
  • openssl_csr_sign