12-18-2001
Yeah - that works..... the only thing is that's also a workaround - and I already have one that works - which is probably less of a workaround.
I'm not adverse to using if-else, after all it's valid code and there for a good reason.... and I would think that the if-else I have is more 'pure' code than creation/deletion of a dummy file.
So I'm not all that worried about the if-else - happy to leave it there as it's no more inefficient than other methods you guys have come up with....really just curious about the empty file thing.
I played with that grep -v "" < file and got the same behaviour you suggested....do you know why null string is considered a match to everything else?
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LEARN ABOUT PHP
php_strip_whitespace
PHP_STRIP_WHITESPACE(3) 1 PHP_STRIP_WHITESPACE(3)
php_strip_whitespace - Return source with stripped comments and whitespace
SYNOPSIS
string php_strip_whitespace (string $filename)
DESCRIPTION
Returns the PHP source code in $filename with PHP comments and whitespace removed. This may be useful for determining the amount of actual
code in your scripts compared with the amount of comments. This is similar to using php -w from the commandline.
PARAMETERS
o $filename
- Path to the PHP file.
RETURN VALUES
The stripped source code will be returned on success, or an empty string on failure.
Note
This function works as described as of PHP 5.0.1. Before this it would only return an empty string. For more information on this
bug and its prior behavior, see bug report #29606.
EXAMPLES
Example #1
php_strip_whitespace(3) example
<?php
// PHP comment here
/*
* Another PHP comment
*/
echo php_strip_whitespace(__FILE__);
// Newlines are considered whitespace, and are removed too:
do_nothing();
?>
The above example will output:
<?php
echo php_strip_whitespace(__FILE__); do_nothing(); ?>
Notice the PHP comments are gone, as are the whitespace and newline after the first echo statement.
PHP Documentation Group PHP_STRIP_WHITESPACE(3)