ERROR: Warning: mysql_connect(): Client does not support authentication protocol requested by server (…) - LabCollector

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ERROR: Warning: mysql_connect(): Client does not support authentication protocol requested by server (…)

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This happens when you use MySQL 4.1 or later with PHP 4. You need to download and use MySQL 4.0 instead as the new MySQL 4.1 uses a new authentication protocol only supported by PHP 5.