php_strip_whitespace(3) [php man page]

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)

STRIP_TAGS(3)								 1							     STRIP_TAGS(3)

strip_tags - Strip HTML and PHP tags from a string

SYNOPSIS

       string strip_tags (string  $str, [string  $allowable_tags])

DESCRIPTION

	This  function	tries to return a string with all NULL bytes, HTML and PHP tags stripped from a given $str. It uses the same tag stripping
       state machine as the fgetss(3) function.

PARAMETERS

	      o $str
		- The input string.

	      o $allowable_tags
		- You can use the optional second parameter to specify tags which should not be stripped.

	      Note

		      HTML comments and PHP tags are also stripped. This is hardcoded and can not be changed with $allowable_tags.

	      Note

		      This parameter should not contain whitespace. strip_tags(3) sees a tag as a case-insensitive string between < and the  first
		     whitespace or >.

	      Note

		      In  PHP  5.3.4 and later, you will also need to include the self-closing XHTML tag to strip these from $str. For example, to
		     strip both <br> and <br/>, you should use:

		     <?php
		     strip_tags($input, '<br><br/>');
		     ?>

RETURN VALUES

	Returns the stripped string.

CHANGELOG

       +--------+---------------------------------------------------+
       |Version |						    |
       |	|						    |
       |	|		     Description		    |
       |	|						    |
       +--------+---------------------------------------------------+
       | 5.3.4	|						    |
       |	|						    |
       |	| strip_tags(3) no longer strips self-closing XHTML |
       |	| tags	unless	the  self-closing XHTML tag is also |
       |	| given in $allowable_tags.			    |
       |	|						    |
       | 5.0.0	|						    |
       |	|						    |
       |	|	  strip_tags(3) is now binary safe.	    |
       |	|						    |
       +--------+---------------------------------------------------+
EXAMPLES

       Example #1

	      strip_tags(3) example

	      <?php
	      $text = '<p>Test paragraph.</p><!-- Comment --> <a href="#fragment">Other text</a>';
	      echo strip_tags($text);
	      echo "
";

	      // Allow <p> and <a>
	      echo strip_tags($text, '<p><a>');
	      ?>

	      The above example will output:

	      Test paragraph. Other text
	      <p>Test paragraph.</p> <a href="#fragment">Other text</a>

NOTES

       Warning

	       Because strip_tags(3) does not actually validate the HTML, partial or broken tags can result in the removal of more text/data  than
	      expected.

       Warning

	       This  function does not modify any attributes on the tags that you allow using $allowable_tags, including the style and onmouseover
	      attributes that a mischievous user may abuse when posting text that will be shown to other users.

       Note

	       Tag names within the input HTML that are greater than 1023 bytes in length will be treated as though they are  invalid,	regardless
	      of the $allowable_tags parameter.

SEE ALSO

       htmlspecialchars(3).

PHP Documentation Group 													     STRIP_TAGS(3)