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openssl_pkey_export()

« openssl_get_publickey | openssl_pkey_get_details »
<?php
$key 
openssl_pkey_new(
    
 // [array $n_configargs]
);

$bool openssl_pkey_export (
    
// mixed $key
    
// string &$out
    
// [string $passphrase]
    
  // [array $configargs]
);
?>
結果
$out = '-----BEGIN PRIVATE KEY-----
MIIJQwIBADANBgkqhkiG9w0BAQEFAASCCS0wggkpAgEAAoICAQDolCMBwBwqWW6K
RqtBVviSpXD57CFmN1Sv6tvFICFmkLI/hrJcDEQH0pvXX80/oSdbaM4QYfkfcKFb
6ahYvw6waGWDwfCU8zZLXFKa7mqzalMGYVT+NpexS2N/Kv9IlaDL5D7KmiNowUWW
q19k5XjNdOjW0eRXkT7Wvzsdeb7SqFaU6+CWMKJDFFYxTS76XI0GtEur3YDLSQ+Q
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8jZPhiHhCYGnmf6DFAYQudLyZBmehI5qwgYJ8Ft0qMsZ8eJzY3iyKxvegT7GQXzK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WKchcLKLAId+bMULGRUAACqMwj4FGvM51UeNwCGTWoTu4nMtQkXBBn5j4hqOrQz9
EiodzCgfzMsWPOAzv5ARiwKnacVbVWEfvmns8q/d6d82XnhK+4a5pjQtSQbO61VT
6lXf7etX9879TCgydPIyl8nS2eEfaqMPDuwB913GMTdiMkoqQ4GVoadKgN2hm2uh
7Y+y0S+cbCoSe2mDNNcSoRFh08GTUCPd+x+1zKr1QN0l5tTcqnyj/mO8/li+HYoI
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vWN7I5cVoFDRP5iTxbbCk4kzU12vOO8sX5FAD1G9aoNNAOscyhLBhney6oyhDyu5
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v/y9vks8OtFurcJjFlUc4EOgkbE7nTI=
-----END PRIVATE KEY-----
'
$bool = true
#1 openssl_pkey_export  ($key,
 
$out,
 
"this is a passphrase")
#2 openssl_pkey_export  (/* $n_configargs = ["digest_alg" => "sha512", "private_key_bits" => 4096, "private_key_type" => OPENSSL_KEYTYPE_RSA] */
 
$key,
 
$out)
参照
openssl_pkey_new