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(PHP 5)
mysqli_connect_error — Returns a string description of the last connect error
Returns the last error message string from the last call to mysqli_connect().
A string that describes the error. An empty string if no error occurred.
Example #1 mysqli_connect_error() example
<?php $link = @mysqli_connect("localhost", "nonexisting_user", ""); if (!$link) { printf("Can't connect to localhost. Error: %s\n", mysqli_connect_error()); } ?>