Better check for getmypid to potentially avoid warnings (#16936)

refs https://wordpress.org/support/topic/warning-getmypid-has-been-disabled/

Might not make a difference but could (because third parameter in in_array is not true). This way we might better detect that getmypid is not supported although in the user's case likely the problem is that `getmypid` is supported in web and not CLI.

1 files changed, 2 insertions, 1 deletions

diff --git a/core/CliMulti/Process.php b/core/CliMulti/Process.php
index 7348e8ce6a..daed5a85c4 100644
--- a/core/CliMulti/Process.php
+++ b/core/CliMulti/Process.php
@@ -181,7 +181,8 @@ class Process
             return false;
         }
 
-        if (!in_array(getmypid(), self::getRunningProcesses())) {
+        $pid = @getmypid();
+        if (empty($pid) || !in_array($pid, self::getRunningProcesses())) {
             return false;
         }