note 93432 added to function.trim

Admendum to this note: <?php // trim the ASCII control characters at the beginning and end of $binary // (from 0 to 31 inclusive) $clean = trim($binary, "\x00..\x1F"); ?> I had a big time with my WWW parser, which produced XML errors because of illegal characters in the outside files. So I decided to wipe them out. If you want to remove all illegal SGML characters (ASCII coces 0 to 31 inclusive and 127 to 159 inclusive) from the whole string, (remember that trim doesn't work inside a string, just on the borders) here's how to do that: <?php $title = "Autobus zamiast \x1EHetmana\x1D"; $replaceArray = array(array(), array()); // this is a replace array for illegal SGML characters; for ($i=0; $i<32; $i++) // produces a correct XML output { $replaceArray[0][] = chr($i); $replaceArray[1][] = ""; } for ($i=127; $i<160; $i++) { $replaceArray[0][] = chr($i); $replaceArray[1][] = ""; } $title = str_replace($replaceArray[0], $replaceArray[1], $title); // get rid of illegal SGML chars echo $title; // prints out "Autobus zamiast Hetmana" ?> Now $title can be printed into an XML/XHTML file without worries. ---- Server IP: 82.177.164.100 Probable Submitter: 78.8.2.103 ---- Manual Page -- http://www.php.net/manual/en/function.trim.php Edit -- https://master.php.net/note/edit/93432 Del: integrated -- https://master.php.net/note/delete/93432/integrated Del: useless -- https://master.php.net/note/delete/93432/useless Del: bad code -- https://master.php.net/note/delete/93432/bad+code Del: spam -- https://master.php.net/note/delete/93432/spam Del: non-english -- https://master.php.net/note/delete/93432/non-english Del: in docs -- https://master.php.net/note/delete/93432/in+docs Del: other reasons-- https://master.php.net/note/delete/93432 Reject -- https://master.php.net/note/reject/93432 Search -- https://master.php.net/manage/user-notes.php