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Top Forums UNIX for Dummies Questions & Answers Sending signal from child to parent process! Post 302368795 by vkn_1985 on Thursday 5th of November 2009 04:17:10 PM
Old 11-05-2009
Thank you. But I didnt get why printf() should not be used...Looking at the link you have posted, I am guessing functions like printf cannot be interruped in the middle. Am I right?
And which other function should I consider using for printing within handler?
 

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MAXDB_PING(3)								 1							     MAXDB_PING(3)

maxdb_ping - Pings a server connection, or tries to reconnect if the connection has gone down

       Procedural style

SYNOPSIS
bool maxdb_ping (resource $link) DESCRIPTION
Object oriented style bool maxdb::ping (void ) Checks whether the connection to the server is working. If it has gone down, and global option maxdb.reconnect is enabled an automatic reconnection is attempted. This function can be used by clients that remain idle for a long while, to check whether the server has closed the connection and recon- nect if necessary. RETURN VALUES
Returns TRUE on success or FALSE on failure. EXAMPLES
Example #1 Object oriented style <?php $maxdb = new maxdb("localhost", "MONA", "RED", "DEMODB"); /* check connection */ if (maxdb_connect_errno()) { printf("Connect failed: %s ", maxdb_connect_error()); exit(); } /* check if server is alive */ if ($maxdb->ping()) { printf ("Our connection is ok! "); } else { printf ("Error: %s ", $maxdb->error); } /* close connection */ $maxdb->close(); ?> Example #2 Procedural style <?php $link = maxdb_connect("localhost", "MONA", "RED", "DEMODB"); /* check connection */ if (maxdb_connect_errno()) { printf("Connect failed: %s ", maxdb_connect_error()); exit(); } /* check if server is alive */ if (maxdb_ping($link)) { printf ("Our connection is ok! "); } else { printf ("Error: %s ", maxdb_error($link)); } /* close connection */ maxdb_close($link); ?> The above example will output something similar to: Our connection is ok! PHP Documentation Group MAXDB_PING(3)
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