#49665 [NEW]: bad example for filter_var() in documentation

From: alex dot schuch at gmx dot de Operating system: - PHP version: Irrelevant PHP Bug Type: Documentation problem Bug description: bad example for filter_var() in documentation Description: ------------ The example given at "http://www.php.net/manual/en/filter.examples.validation.php" makes people believe the sanitation always work that way, which is not the case. The example should be like this: if (($int_c = filter_var($int_c, FILTER_VALIDATE_INT, $options)) !== FALSE) { echo "This (int_c) integer is considered valid (between 0 and 3) and is $int_c."; } This is related to <http://bugs.php.net/bug.php?id=42136>. Reproduce code: --------------- <?php $int_c = '4'; $options = array( 'options' => array( 'min_range' => 0, 'max_range' => 3, ) ); // [...] $options['options']['default'] = 0; // has "1" in documentation if ($int_c = filter_var($int_c, FILTER_VALIDATE_INT, $options)) { echo "This (int_c) integer is considered valid (between 0 and 3) and is $int_c."; } ?> Expected result: ---------------- This (int_c) integer is considered valid (between 0 and 3) and is 0. Actual result: -------------- -no output- -- Edit bug report at http://bugs.php.net/?id=49665&edit=1 -- Try a snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=49665&r=trysnapshot52 Try a snapshot (PHP 5.3): http://bugs.php.net/fix.php?id=49665&r=trysnapshot53 Try a snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=49665&r=trysnapshot60 Fixed in SVN: http://bugs.php.net/fix.php?id=49665&r=fixed Fixed in SVN and need be documented: http://bugs.php.net/fix.php?id=49665&r=needdocs Fixed in release: http://bugs.php.net/fix.php?id=49665&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=49665&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=49665&r=needscript Try newer version: http://bugs.php.net/fix.php?id=49665&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=49665&r=support Expected behavior: http://bugs.php.net/fix.php?id=49665&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=49665&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=49665&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=49665&r=globals PHP 4 support discontinued: http://bugs.php.net/fix.php?id=49665&r=php4 Daylight Savings: http://bugs.php.net/fix.php?id=49665&r=dst IIS Stability: http://bugs.php.net/fix.php?id=49665&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=49665&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=49665&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=49665&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=49665&r=mysqlcfg