Doc #68542 [NEW]: Relational operators semantics is different with actual behavior.

From: y dot uchiyama dot 1015 at gmail dot com Operating system: PHP version: Irrelevant Package: PHP Language Specification Bug Type: Documentation Problem Bug description:Relational operators semantics is different with actual behavior. Description: ------------ The semantics of relational operators (in 10-expressions.md) is different with the actual behavior of PHP, in case that both operands are string (the semantics says rules 2 and 4 are applied). In this case, numeric comparison is applied only if both operands are numeric string without overflow, otherwise lexical comparison is applied. Some examples are shown below. echo ('1' == '0x1') . "\n"; // true echo ('1' == '1a') . "\n"; // false echo ('1234567890' == '1234567890.0') . "\n"; // true echo ('123456789012345678901234567890' == '123456789012345678901234567890.0') . "\n"; // false echo ('1e10' == '1.0e10') . "\n"; // true echo ('1e1000' == '1.0e1000') . "\n"; // false -- Edit bug report at https://bugs.php.net/bug.php?id=68542&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=68542&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=68542&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=68542&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=68542&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=68542&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=68542&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=68542&r=needscript Try newer version: https://bugs.php.net/fix.php?id=68542&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=68542&r=support Expected behavior: https://bugs.php.net/fix.php?id=68542&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=68542&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=68542&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=68542&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=68542&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=68542&r=dst IIS Stability: https://bugs.php.net/fix.php?id=68542&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=68542&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=68542&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=68542&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=68542&r=mysqlcfg