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Full Discussion: Signal Processing
Top Forums UNIX for Dummies Questions & Answers Signal Processing Post 8202 by Perderabo on Monday 8th of October 2001 10:19:26 AM
Old 10-08-2001
Gee, thanks for the kind words guys!

No, you cannot just assume the next pid will be the current pid +1. You're on a multi-user machine. Stuff like cron runs all the time. If someone else forks first, they get the next pid. Also in a multi-cpu system, each cpu will usually reserve a chunk of 10 or so pids at once to cut down on spinlocks. Finally, pids recycle after pid 32,000.

The worst consequence of the sleep program in the background is that it is consuming a proc table entry. Too many of these and eventually you bump into maxuprc and cannot fork anymore. As long as that was not an issue, I'd just let it run. Remember that it will take code to remember or find the pid and then kill the pid. The load that this code would put on the system is trivial, but the only payback is the early death of a sleep statement...it can't make a profit.

If you really got to nail that last sleep process, a "kill $(ps -f | grep [s]leep |awk '{print $2}')" should get it.
 

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SQLSRV_QUERY(3) 														   SQLSRV_QUERY(3)

sqlsrv_query - Prepares and executes a query.

SYNOPSIS
mixed sqlsrv_query (resource $conn, string $sql, [array $params], [array $options]) DESCRIPTION
Prepares and executes a query. PARAMETERS
o $conn - A connection resource returned by sqlsrv_connect(3). o $sql - The string that defines the query to be prepared and executed. o $params - An array specifying parameter information when executing a parameterized query. Array elements can be any of the following: oA literal value oA PHP variable oAn array with this structure: array($value [, $direction [, $phpType [, $sqlType]]]) The following table describes the elements in the array structure above: Array structure +----------------------+---------------------------------------------------+ | Element | | | | | | | Description | | | | +----------------------+---------------------------------------------------+ | $value | | | | | | | A literal value, a PHP variable, or a PHP by-ref- | | | erence variable. | | | | |$direction (optional) | | | | | | | One of the following SQLSRV constants used to | | | indicate the parameter direction: SQL- | | | SRV_PARAM_IN, SQLSRV_PARAM_OUT, SQL- | | | SRV_PARAM_INOUT. The default value is SQL- | | | SRV_PARAM_IN. | | | | | $phpType (optional) | | | | | | | A SQLSRV_PHPTYPE_* constant that specifies PHP | | | data type of the returned value. | | | | | $sqlType (optional) | | | | | | | A SQLSRV_SQLTYPE_* constant that specifies the | | | SQL Server data type of the input value. | | | | +----------------------+---------------------------------------------------+ o $options - An array specifing query property options. The supported keys are described in the following table: Query Options +-----------------------+--------------------------------------+---+ | Key | | | | | | | | | Values | | | | | | | | Description | | | | | | +-----------------------+--------------------------------------+---+ | QueryTimeout | | | | | | | | | A positive integer value. | | | | | | | | Sets the query timeout in seconds. | | | | By default, the driver will wait | | | | indefinitely for results. | | | | | | |SendStreamParamsAtExec | | | | | | | | | | | | | TRUE or FALSE (the default is TRUE) | | | | | | | | Configures the driver to send all | | | | stream data at execution ( TRUE), or | | | | to send stream data in chunks ( | | | | FALSE). By default, the value is set | | | | to TRUE. For more information, see | | | | sqlsrv_send_stream_data(3). | | | | | | | Scrollable | | | | | | | | | SQLSRV_CURSOR_FORWARD, SQLSRV_CUR- | | | | SOR_STATIC, SQLSRV_CURSOR_DYNAMIC, | | | | or SQLSRV_CURSOR_KEYSET | | | | | | | | See Specifying a Cursor Type and | | | | Selecting Rows in the Microsoft SQL- | | | | SRV documentation. | | | | | | +-----------------------+--------------------------------------+---+ RETURN VALUES
Returns a statement resource on success and FALSE if an error occurred. EXAMPLES
Example #1 sqlsrv_query(3) example <?php $serverName = "serverNamesqlexpress"; $connectionInfo = array( "Database"=>"dbName", "UID"=>"username", "PWD"=>"password" ); $conn = sqlsrv_connect( $serverName, $connectionInfo); if( $conn === false ) { die( print_r( sqlsrv_errors(), true)); } $sql = "INSERT INTO Table_1 (id, data) VALUES (?, ?)"; $params = array(1, "some data"); $stmt = sqlsrv_query( $conn, $sql, $params); if( $stmt === false ) { die( print_r( sqlsrv_errors(), true)); } ?> NOTES
For statements that you plan to execute only once, use sqlsrv_query(3). If you intend to re-execute a statement with different parameter values, use the combination of sqlsrv_prepare(3) and sqlsrv_execute(3). SEE ALSO
sqlsrv_prepare(3), sqlsrv_execute(3). PHP Documentation Group SQLSRV_QUERY(3)
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