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Top Forums Programming [C language] system function print output when not expected. Post 302418475 by ejdv on Tuesday 4th of May 2010 11:42:31 AM
Old 05-04-2010
Thanks.

That explained why I did not see the return values.
But the command output is still printed.

Code:
-> main()
main() passing_var  = datum
-> date()
date() passing_var  = datum
date() command      = date
Tue May  4 15:10:34 GMT 2010
date() date_return  = 0
<- date()
main() return_value = 0
<- main()

Probably the command function is not what I need.
I just read that the command function just executes the command and only delivers the exit value of the command executed.
Perhaps I can make use of this.
I do not need the date output, that was just as an example.
I only need an integer, so I will try to use the exit value for this.

---------- Post updated at 05:42 PM ---------- Previous update was at 05:19 PM ----------

As I have control over the exit value of the command executed, I can have the output go to "> /dev/null 2&>1".
Then with "WEXITSTATUS" I can parse the exit value to my variable.

Slowly getting there :-)
 

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DATETIME.SETDATE(3)							 1						       DATETIME.SETDATE(3)

DateTime::setDate - Sets the date

       Object oriented style

SYNOPSIS
public DateTime DateTime::setDate (int $year, int $month, int $day) DESCRIPTION
Procedural style DateTime date_date_set (DateTime $object, int $year, int $month, int $day) Resets the current date of the DateTime object to a different date. PARAMETERS
o $object -Procedural style only: A DateTime object returned by date_create(3). The function modifies this object. o $year - Year of the date. o $month - Month of the date. o $day - Day of the date. RETURN VALUES
Returns the DateTime object for method chaining or FALSE on failure. CHANGELOG
+--------+---------------------------------------------------+ |Version | | | | | | | Description | | | | +--------+---------------------------------------------------+ | 5.3.0 | | | | | | | Changed the return value on success from NULL to | | | DateTime. | | | | +--------+---------------------------------------------------+ EXAMPLES
Example #1 DateTime.setDate(3) example Object oriented style <?php $date = new DateTime(); $date->setDate(2001, 2, 3); echo $date->format('Y-m-d'); ?> Procedural style <?php $date = date_create(); date_date_set($date, 2001, 2, 3); echo date_format($date, 'Y-m-d'); ?> The above examples will output: 2001-02-03 Example #2 Values exceeding ranges are added to their parent values <?php $date = new DateTime(); $date->setDate(2001, 2, 28); echo $date->format('Y-m-d') . " "; $date->setDate(2001, 2, 29); echo $date->format('Y-m-d') . " "; $date->setDate(2001, 14, 3); echo $date->format('Y-m-d') . " "; ?> The above example will output: 2001-02-28 2001-03-01 2002-02-03 SEE ALSO
DateTime.setISODate(3), DateTime.setTime(3). PHP Documentation Group DATETIME.SETDATE(3)
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