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Top Forums UNIX for Dummies Questions & Answers Check to see if string var is empty Post 302373418 by thegeek on Friday 20th of November 2009 07:38:52 AM
Old 11-20-2009
Code:
set var1
set var2 = abcd

if [ -z $var1 ] 
then
  echo 'var1 empty.'
fi

if [ -z $var2 ] 
then
  echo 'var2 empty.'
fi

 

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OUTPUT_ADD_REWRITE_VAR(3)						 1						 OUTPUT_ADD_REWRITE_VAR(3)

output_add_rewrite_var - Add URL rewriter values

SYNOPSIS
bool output_add_rewrite_var (string $name, string $value) DESCRIPTION
This function adds another name/value pair to the URL rewrite mechanism. The name and value will be added to URLs (as GET parameter) and forms (as hidden input fields) the same way as the session ID when transparent URL rewriting is enabled with session.use_trans_sid. Please note that absolute URLs (http://example.com/..) aren't rewritten. This function's behavior is controlled by the url_rewriter.tags php.ini parameter. Note Calling this function will implicitly start output buffering if it is not active already. PARAMETERS
o $name - The variable name. o $value - The variable value. RETURN VALUES
Returns TRUE on success or FALSE on failure. EXAMPLES
Example #1 output_add_rewrite_var(3) example <?php output_add_rewrite_var('var', 'value'); // some links echo '<a href="file.php">link</a> <a href="http://example.com">link2</a>'; // a form echo '<form action="script.php" method="post"> <input type="text" name="var2" /> </form>'; print_r(ob_list_handlers()); ?> The above example will output: <a href="file.php?var=value">link</a> <a href="http://example.com">link2</a> <form action="script.php" method="post"> <input type="hidden" name="var" value="value" /> <input type="text" name="var2" /> </form> Array ( [0] => URL-Rewriter ) SEE ALSO
output_reset_rewrite_vars(3), ob_flush(3), ob_list_handlers(3). PHP Documentation Group OUTPUT_ADD_REWRITE_VAR(3)
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