#31324 [Opn->Fbk]: function strlen miscounts

ID: 31324 Updated by: derick@php.net Reported By: phpbug at tore dot cc -Status: Open +Status: Feedback Bug Type: Strings related Operating System: Solaris 10 PHP Version: 5.0.2 New Comment: It still works fine for me on Linux. Which compiler did you use to compile PHP (gcc or sun workshop), and what kind of platform do you use? intel (32/64), sparc... Previous Comments: ------------------------------------------------------------------------ [2004-12-28 23:40:36] phpbug at tore dot cc Sorry, my mistake! It seems to work on one char long strings. I made a better script (still avoiding loops...). <?php $s=pack("C*",0x8e,0x8f); $t=pack("C*",0x8e); $u=pack("C*",0x8e,0x8f,0x90); print "The variable s has the length: " . strlen($s) . "\n"; print "The variable t has the length: " . strlen($t) . "\n"; print "The variable u has the length: " . strlen($u) . "\n"; ?> Result: The variable s has the length: 1 The variable t has the length: 1 The variable u has the length: 2 The result should be: The variable s has the length: 2 The variable t has the length: 1 The variable u has the length: 3 Since s=2 chars, t=1 char and u 3 chars long. Lets try another test with 7 bit chars. <?php $s=pack("C*",0x30,0x31); $t=pack("C*",0x30); $u=pack("C*",0x30,0x31,0x32); print "The variable s has the length: " . strlen($s) . "\n"; print "The variable t has the length: " . strlen($t) . "\n"; print "The variable u has the length: " . strlen($u) . "\n"; ?> Result: The variable s has the length: 2 The variable t has the length: 1 The variable u has the length: 3 As expected. No problem with low values on the chars. ------------------------------------------------------------------------ [2004-12-28 23:07:29] derick@php.net Please try using this CVS snapshot: http://snaps.php.net/php5-STABLE-latest.tar.gz For Windows: http://snaps.php.net/win32/php5.0-win32-latest.zip Both in 4.3.10RC2, 5.0.3-dev, and 5.1.0-dev it prints as expected: The variable s has the length: 1 (actual length) 1 So please try a snapshot. ------------------------------------------------------------------------ [2004-12-28 21:57:50] phpbug at tore dot cc How about: <?php $s=pack("C",143); $result = count_chars($s, 0); print "The variable s has the length: " . strlen($s) . " (actual length) " . $result[143] . "\n"; ?> Gives printout: The variable s has the length: 0 (actual length) 1 The 'pack' creates a bit-string with a length of 1 char. The 'strlen' should should recognize it as a char with length 1. As you can see below 'strlen' does not only miscalculates the string length for the char 143. ------------------------------------------------------------------------ [2004-12-28 19:19:36] derick@php.net I don't understand what your script is doing, please come up with a trivial script instead of those loops. ------------------------------------------------------------------------ [2004-12-28 18:38:55] phpbug at tore dot cc My configuration: ./configure --with-apxs=/opt/csw/apache/bin/apxs --with-mod_charset --with-openssl=/opt/csw --enable-ftp --with-imap-ssl --with-jpeg=/usr/csw/lib --with-mysql=/opt/sfw/mysql --with-pgsql --enable-mbstr-enc-trans --enable-mbstring --enable-mbregex --with-tiff=/usr/sfc/lib --enable-inline-optimization --with-imap=/mnt/slask/src/imap-2002 --with-java=/usr/j2se --with-ming=/usr/local --with-orc8=/opt/oracle --with-gettext --with-xml --with-dom --with-zlib --enable-cli --enable-zend-multibyte --with-mod_charset --enable-gd-jis-conv --disable-libxml ------------------------------------------------------------------------ The remainder of the comments for this report are too long. To view the rest of the comments, please view the bug report online at http://bugs.php.net/31324 -- Edit this bug report at http://bugs.php.net/?id=31324&edit=1