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Full Discussion: exit(0) versus exit(1)
Top Forums Programming exit(0) versus exit(1) Post 302122979 by aobai on Friday 22nd of June 2007 10:18:52 AM
Old 06-22-2007
Quote:
Originally Posted by porter
What to do you want to tell your parent?

The rules is generally if all went went and you did what you were told (as all children should) then return 0.

If something went wrong then return non-zero, preferably between 1 and 127.

This is termed the exit code of a process and in a shell becomes the "$?" value.

This allows you to do the following

Code:
if myprogram
then 
      echo all went well
else 
      echo bad things
fi

can it be bigger than 127?
thanks
 

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INET_NTOP(3)								 1							      INET_NTOP(3)

inet_ntop - Converts a packed internet address to a human readable representation

SYNOPSIS
string inet_ntop (string $in_addr) DESCRIPTION
This function converts a 32bit IPv4, or 128bit IPv6 address (if PHP was built with IPv6 support enabled) into an address family appropri- ate string representation. PARAMETERS
o $in_addr - A 32bit IPv4, or 128bit IPv6 address. RETURN VALUES
Returns a string representation of the address or FALSE on failure. EXAMPLES
Example #1 inet_ntop(3) Example <?php $packed = chr(127) . chr(0) . chr(0) . chr(1); $expanded = inet_ntop($packed); /* Outputs: 127.0.0.1 */ echo $expanded; $packed = str_repeat(chr(0), 15) . chr(1); $expanded = inet_ntop($packed); /* Outputs: ::1 */ echo $expanded; ?> CHANGELOG
+--------+---------------------------------------------------+ |Version | | | | | | | Description | | | | +--------+---------------------------------------------------+ | 5.3.0 | | | | | | | This function is now available on Windows plat- | | | forms. | | | | +--------+---------------------------------------------------+ SEE ALSO
long2ip(3), ip2long(3), inet_pton(3). PHP Documentation Group INET_NTOP(3)
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