Description:
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From manual page: http://www.php.net/ref.pdo-mysql
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Each PDO Attribute is a different type, but the documentation shows all of them as integer.

For example:  MYSQL_ATTR_SSL_CA accepts a string but the documentation shows MYSQL_ATTR_SSL_CA(integer)

Some accept strings, some integers, some boolean.

Test script:
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// No test script needed.  Doc problem