Explain why WP alternatives should be preferred in the standard description

Author: rodrigoprimo

WordPress/Docs/WP/AlternativeFunctionsStandard.xml

@@ -6,6 +6,8 @@
     <standard>
     <![CDATA[
     Use WordPress functions instead of certain native PHP functions.
+
+    These WordPress functions typically improve consistency across different PHP versions, operating systems, and server configurations, and/or provide a more comprehensive or robust version of the PHP native function. Using them can make the code more portable and reliable.
     ]]>
     </standard>
     <code_comparison>