Runs the query provided and returns the data from the first column of the first row then frees the result set.
the SQL query or the statement to prepare
array, string or numeric data to be added to the prepared statement. Quantity of items passed must match quantity of placeholders in the prepared statement: meaning 1 placeholder for non-array parameters or 1 placeholder per array element.
If supplied, prepare()/ execute() is used.
Table 26-1. Possible PEAR_Error values
Error code | Error message | Reason | Solution |
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DB_ERROR_INVALID | invalid | SQL statment for preparing is not valid. | See the prepare() documentation, if you want to use a SQL statemt using placeholders. |
DB_ERROR_MISMATCH | mismatch | Quantity of parameters didn't match quantity of placeholders in the prepared statment. | Check that the number of placeholders in the prepare() statement passed to $query equals the count of entries passed to $params. |
DB_ERROR_NODBSELECTED | no database selected | No database was choosen. | Check the DSN in connect(). |
every other error code | Database specific error | Check the database related section of PHP-Manual to detect the reason for this error. In the most cases a misformed SQL statment. Ie. using LIMIT in a SQL-Statment for an Oracle database. |
Example 26-1. Using getOne()
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Example 26-2. Using getOne() with one placeholder
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Example 26-3. Using getOne() with two placeholders
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