mysqlnd_qc_set_cache_condition Set conditions for automatic caching &reftitle.description; bool mysqlnd_qc_set_cache_condition int condition_type mixed condition mixed condition_option Sets a condition for automatic caching of statements which do not contain the necessary SQL hints to enable caching of them. &reftitle.parameters; condition_type Type of the condition. The only allowed value is MYSQLND_QC_CONDITION_META_SCHEMA_PATTERN. condition Parameter for the condition set with condition_type. Parameter type and structure depend on condition_type If condition_type equals MYSQLND_QC_CONDITION_META_SCHEMA_PATTERN condition must be a string. The string sets a pattern. Statements are cached if table and database meta data entry of their result sets match the pattern. The pattern is checked for a match with the db and org_table meta data entries provided by the underlying MySQL client server library. Please, check the MySQL Reference manual for details about the two entries. The db and org_table values are concatenated with a dot (.) before matched against condition. Pattern matching supports the wildcards % and _. The wildcard % will match one or many arbitrary characters. _ will match one arbitrary character. The escape symbol is backslash. condition_option Option for condition. Type and structure depend on condition_type. If condition_type equals MYSQLND_QC_CONDITION_META_SCHEMA_PATTERN condition_options is the TTL to be used. &reftitle.examples; query("SELECT id, title FROM news"); $pdo_mysql = new PDO("mysql:host=host;dbname=db_example;port=port", "user", "password"); /* not cached: no SQL hint, no pattern match */ $pdo_mysql->query("SELECT id, title FROM latest_news"); /* cached: TTL 1 second, pattern match */ $pdo_mysql->query("SELECT id, title FROM news"); ?> ]]> &reftitle.returnvalues; Returns TRUE on success or FALSE on FAILURE. &reftitle.seealso; Quickstart: pattern based caching