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Top Forums Shell Programming and Scripting PHP: declared variables, strlen vs isset Post 302976754 by stomp on Tuesday 5th of July 2016 04:22:37 PM
Old 07-05-2016
Hi crimso,

congrats that you got it fixed!

Let me mention that NULL is a special value. An empty string is NOT NULL. An empty string is still a string.

The interactive php interpreter may help you with testing of code.

Code:
hellfire@hellfire:~$ php -a
Interactive mode enabled
php > var_dump("");
string(0) ""
php >

The mentioned function gettype() and var_dump() help you a lot in debugging!
 

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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)
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