openssl_pkey_export_to_file

(PHP 4 >= 4.2.0, PHP 5, PHP 7, PHP 8)

openssl_pkey_export_to_fileGets an exportable representation of a key into a file

Descrizione

openssl_pkey_export_to_file(
    OpenSSLAsymmetricKey|OpenSSLCertificate|array|string $key,
    string $output_filename,
    ?string $passphrase = null,
    ?array $options = null
): bool

openssl_pkey_export_to_file() saves an ascii-armoured (PEM encoded) rendition of key into the file named by output_filename.

Nota: Occorre un openssl.cnf valido installato perché questa funzione venga eseguita correttamente. Vedere le note nella sezione sull'installazione per ulteriori informazioni.

Elenco dei parametri

key

output_filename

Path to the output file.

passphrase

The key can be optionally protected by a passphrase.

options

options can be used to fine-tune the export process by specifying and/or overriding options for the openssl configuration file. See openssl_csr_new() for more information about options.

Valori restituiti

Restituisce true in caso di successo, false in caso di fallimento.

Log delle modifiche

Versione Descrizione
8.0.0 key accepts an OpenSSLAsymmetricKey or OpenSSLCertificate instance now; previously, a resource of type OpenSSL key or OpenSSL X.509 was accepted.
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User Contributed Notes 2 notes

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-3
StampyCode
7 years ago
On Linux (PHP5.6), this function will overwrite an existing keyfile, unless the keyfile is marked as read-only, in which case you will get an error:

    error:0200100D:system library:fopen:Permission denied
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-6
w3ricardo
12 years ago
You can't use this function to export a public key

Warning: openssl_pkey_export_to_file(): supplied key param is a public key
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