openssl_pkey_get_public not open public key, "no start line" error

Question

When generating public key and then reading it with function openssl_pkey_get_public - $publicKeyResource = bool(false) and message: error:0906D06C:PEM routines:PEM_read_bio:no start line

$privateKey = openssl_pkey_new(array('private_key_bits' => 2048, 'private_key_type' => OPENSSL_KEYTYPE_RSA));

$keyDetails = openssl_pkey_get_details($privateKey);

$publicKeyResource = openssl_pkey_get_public($keyDetails['key']);

What is wrong?

P.S.

privateKey = 

array(3) {
  ["bits"]=>int(2048)

  ["key"]=>
  string(451) "-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEApo5lpSuSQmAOXfqAmexj
IzjdGnd1X1gCKj5ko2DHgcR4XBlj1hbFNs1pzXx+R/UvLXTeF7dNQ+9AgXjEeRa6
71VbNxrUgvb/PHjEANwce7xBsnbu+dcSazyNHzx4ahWyEF4f3HyaJkGrT/Dgzcut
DO+yFAH9u8Hx26cj/8kyrtIHxazemnD+IDHRa3zOjKDmTfoDRKtOMTPVgFAsYBXn
tKcLyamCSBgpwfQwKfUUcYhfY1xD9UMhVXabSSiNQOiTMuOIZUHueO8UCp/tdK6a
LprUDBQ/tVmiV7ZMeZYMjh6XnK7higJ3WZp8RmD4PPeKbtG6j2AuGpbF/ddzD62T
XwIDAQAB
-----END PUBLIC KEY-----
"

  ["type"]=>
  int(0)
}

Answer 1

Same answer as I gave in PHP + OpenSSL : error returned, but correct result: This is apparently caused by openssl_pkey_get_public() which wants a certificate containing your public key rather than the public key by itself – it seems to load the public key but still causes this error. See details there.