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Full Discussion: Printing unix error codes
Special Forums UNIX and Linux Applications Printing unix error codes Post 302359853 by vijaya2006 on Wednesday 7th of October 2009 02:36:48 PM
Old 10-07-2009
Question Printing unix error codes

Hi Friends,

I need your help in understanding this: Smilie

I want to print the error numbers returned by the system calls (not the actual integers but the strings that they match to). The error numbers like EACCESS, ENOMEM, ENOENT etc ...

For eg:
Code:
returnCode = open(somefile, O_RDONLY);

if (returnCode < 0) {

/* Handle the error */

printf("Error %d occured\n",errno);

}

>>>>This will print the error number in terms of integer. I want to get exactly the error code ( EACCESS, or ENOMEM ) etc ..

Thanks in Advance Smilie

Last edited by pludi; 10-07-2009 at 04:31 PM.. Reason: code tags, please...
 

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MYSQLI_ERRNO(3) 							 1							   MYSQLI_ERRNO(3)

mysqli::$errno - Returns the error code for the most recent function call

       Object oriented style

SYNOPSIS
int$mysqli->errno () DESCRIPTION
Procedural style int mysqli_errno (mysqli $link) Returns the last error code for the most recent MySQLi function call that can succeed or fail. Client error message numbers are listed in the MySQL errmsg.h header file, server error message numbers are listed in mysqld_error.h. In the MySQL source distribution you can find a complete list of error messages and error numbers in the file Docs/mysqld_error.txt. PARAMETERS
o $ link -Procedural style only: A link identifier returned by mysqli_connect(3) or mysqli_init(3) RETURN VALUES
An error code value for the last call, if it failed. zero means no error occurred. EXAMPLES
Example #1 $mysqli->errno example Object oriented style <?php $mysqli = new mysqli("localhost", "my_user", "my_password", "world"); /* check connection */ if ($mysqli->connect_errno) { printf("Connect failed: %s ", $mysqli->connect_error); exit(); } if (!$mysqli->query("SET a=1")) { printf("Errorcode: %d ", $mysqli->errno); } /* close connection */ $mysqli->close(); ?> Procedural style <?php $link = mysqli_connect("localhost", "my_user", "my_password", "world"); /* check connection */ if (mysqli_connect_errno()) { printf("Connect failed: %s ", mysqli_connect_error()); exit(); } if (!mysqli_query($link, "SET a=1")) { printf("Errorcode: %d ", mysqli_errno($link)); } /* close connection */ mysqli_close($link); ?> The above examples will output: Errorcode: 1193 SEE ALSO
mysqli_connect_errno(3), mysqli_connect_error(3), mysqli_error(3), mysqli_sqlstate(3). PHP Documentation Group MYSQLI_ERRNO(3)
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