Bug #70479 [NEW]: Substr() appends invisible characters

From: nino dot skopac at gmail dot com Operating system: Win 10 x64 (winver=10240) PHP version: 7.0.0RC2 Package: Strings related Bug Type: Bug Bug description:Substr() appends invisible characters Description: ------------ When using substr() on v.7 RC2 on my local machine, I am getting different results than when I run the same script on my Linux webserver running v. 5.6.11 Test script: --------------- <?php error_reporting(E_ALL); ob_start(); ?> resources/layout.css resources/jquery.fancybox.css <?php $files = ob_get_clean(); $fs = explode("\n", $files); foreach($fs as $f) { $ext = substr($f, strrpos($f, "."), strlen($f)); $ext_trimmed = trim($ext); var_dump($ext, $ext_trimmed); } ?> Expected result: ---------------- string(4) ".css" string(4) ".css" string(4) ".css" string(4) ".css" bool(false) string(0) "" Actual result: -------------- string(5) ".css" string(4) ".css" string(5) ".css" string(4) ".css" string(0) "" string(0) "" -- Edit bug report at https://bugs.php.net/bug.php?id=70479&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=70479&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=70479&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=70479&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=70479&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=70479&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=70479&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=70479&r=needscript Try newer version: https://bugs.php.net/fix.php?id=70479&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=70479&r=support Expected behavior: https://bugs.php.net/fix.php?id=70479&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=70479&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=70479&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=70479&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=70479&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=70479&r=dst IIS Stability: https://bugs.php.net/fix.php?id=70479&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=70479&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=70479&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=70479&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=70479&r=mysqlcfg