pg_query
pg_query executes the query on the specified database connection. pg_query_params should be preferred in most cases.
If an error occurs, and false is returned, details of the error can be retrieved using the pg_last_error function if the connection is valid.
Note:
Although connection can be omitted, it is not recommended, since it can be the cause of hard to find bugs in scripts.
Note:
This function used to be called pg_exec. pg_exec is still available for compatibility reasons, but users are encouraged to use the newer name.
Parameters
- connection
-
An PgSql\Connection instance. When connection is unspecified, the default connection is used. The default connection is the last connection made by pg_connect or pg_pconnect.
Warning:
As of PHP 8.1.0, using the default connection is deprecated.
- query
-
The SQL statement or statements to be executed. When multiple statements are passed to the function, they are automatically executed as one transaction, unless there are explicit BEGIN/COMMIT commands included in the query string. However, using multiple transactions in one function call is not recommended.
Warning:
String interpolation of user-supplied data is extremely dangerous and is likely to lead to SQL injection vulnerabilities. In most cases pg_query_params should be preferred, passing user-supplied values as parameters rather than substituting them into the query string.
Any user-supplied data substituted directly into a query string should be properly escaped.
Return Values
An PgSql\Result instance on success, or false on failure.
Changelog
| Version | Description |
| 8.1.0 | Returns an PgSql\Result instance now; previously, a resource was returned. |
| 8.1.0 | The connection parameter expects an PgSql\Connection instance now; previously, a resource was expected. |