Description:
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From manual page: http://www.php.net/migration56.openssl
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In the "OpenSSL changes in PHP 5.6." chapter, there are a couple of misspellings in the code:

1. Section: SPKI support, explanation of openssl_spki_new

$spkac = openssl_spki_new($pkey, 'challenge sring');

"sring" should be "string"


2. Section: SPKI support, explanation of openssl_spki_verify
$spkac = openssl_spki_new($pkey, 'challenge sring');

"sring" should be "string"

3. openssl_spki_export_challenge
$spkac = openssl_spki_new($pkey, 'challenge sring');
"sring" should be "string"


4. openssl_spki_export
$spkac = openssl_spki_new($pkey, 'challenge sring');
"sring" should be "string"