openssl_error_string
    (PHP 4 >= 4.0.6, PHP 5)
openssl_error_string -- Return openSSL error message
Description
mixed 
openssl_error_string ( void )
     Returns an error message string, or FALSE if there are no more error
     messages to return.
    
     openssl_error_string() returns the last error from the
     openSSL library.  Error messages are stacked, so this function should be
     called multiple times to collect all of the information.
    
     
Example 1. openssl_error_string() example 
<?php // lets assume you just called an openssl function that failed while ($msg = openssl_error_string())     echo $msg . "<br />\n"; ?>
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