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According to the PHP manual, the four variable types for mysqli->bind_param are
What is the best way to insert a boolean?
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You can insert a boolean value using the INSERT statement: INSERT INTO testbool (sometext, is_checked) VALUES ('a', TRUE); INSERT INTO testbool (sometext, is_checked) VALUES ('b', FALSE); When you select a boolean value, it is displayed as either 't' or 'f'.
You can update boolean value using UPDATE command. If you use the BOOLEAN data type, MySQL internally convert it into tinyint(1). It can takes true or false literal in which true indicates 1 to tinyint(1) and false indicates 0 to tinyint(1).
The PREPARE statement prepares a SQL statement and assigns it a name, stmt_name , by which to refer to the statement later. The prepared statement is executed with EXECUTE and released with DEALLOCATE PREPARE . For examples, see Section 13.5, “Prepared Statements”. Statement names are not case-sensitive.
MySQL doesn't really store booleans anyway, it's a trick.
The actual format is TINYINT, which is I guess integer for pdo.
You will have to convert true/false to 1/0, with intval for example.
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