Doc #78018 [NEW]: mail() expects parameter 4 to be string

From: 888 at foshin dot com Operating system: PHP version: 7.2.18 Package: Mail related Bug Type: Documentation Problem Bug description:mail() expects parameter 4 to be string Description: ------------ --- From manual page: https://php.net/function.mail --- "Warning: mail() expects parameter 4 to be string, array given" even though the manual says "String or array to be inserted at the end of the email header." and "If an array is passed, its keys are the header names and its values are the respective header values.". Test script: --------------- mail("Joe <joe@joe.com>", "Bug", ":(", array("From" => "Joe <joe@joe.com>", "To" => "Joe <joe@joe.com>", "Reply-To" => "Joe <joe@joe.com>", "X-Mailer" => "NOOOooo", "MIME-Version" => "1.0", "Content-type" => "text/html; charset=utf-8", "Date" => date("r"))) Expected result: ---------------- No warning and the mail function actually working. Actual result: -------------- "Warning: mail() expects parameter 4 to be string, array given" -- Edit bug report at https://bugs.php.net/bug.php?id=78018&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=78018&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=78018&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=78018&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=78018&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=78018&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=78018&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=78018&r=needscript Try newer version: https://bugs.php.net/fix.php?id=78018&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=78018&r=support Expected behavior: https://bugs.php.net/fix.php?id=78018&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=78018&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=78018&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=78018&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=78018&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=78018&r=dst IIS Stability: https://bugs.php.net/fix.php?id=78018&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=78018&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=78018&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=78018&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=78018&r=mysqlcfg