Bug #79843 [NEW]: Running intval to string value that is supposed to be INF returns 0

From: taira dot 815 dot terashima at gmail dot com Operating system: Ubuntu18.04 PHP version: 7.4.8 Package: Strings related Bug Type: Bug Bug description:Running intval to string value that is supposed to be INF returns 0 Description: ------------ Running function intval using a string value more than a certain number (maybe DOUBLE MAX) returns 0. Test script: --------------- <?php // It returns 0. (This string value is 2^1024) $number = intval('179769313486231570772930519078902473361797697894230657273430081157732675805500963132708477322407536021120113879871393357658789768814416622492847430639474124377767893424865485276302219601246094119453082952085005768838150682342462881473913110540827237163350510684586298239947245938479716304835356329624224137216'); echo $number; Expected result: ---------------- INF Actual result: -------------- 0 -- Edit bug report at https://bugs.php.net/bug.php?id=79843&edit=1 -- Fix committed: https://bugs.php.net/fix.php?id=79843&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=79843&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=79843&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=79843&r=needscript Try newer version: https://bugs.php.net/fix.php?id=79843&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=79843&r=support Expected behavior: https://bugs.php.net/fix.php?id=79843&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=79843&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=79843&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=79843&r=globals PHP version support discontinued: https://bugs.php.net/fix.php?id=79843&r=phptooold Daylight Savings: https://bugs.php.net/fix.php?id=79843&r=dst IIS Stability: https://bugs.php.net/fix.php?id=79843&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=79843&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=79843&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=79843&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=79843&r=mysqlcfg