diff --git a/src/wp-includes/formatting.php b/src/wp-includes/formatting.php
index a18f79614c..4b5a90d3dc 100644
--- a/src/wp-includes/formatting.php
+++ b/src/wp-includes/formatting.php
@@ -1759,7 +1759,7 @@ function rawurlencode_deep( $value ) {
  */
 function antispambot( $email_address, $hex_encoding = 0 ) {
 	$email_no_spam_address = '';
-	for ( $i = 0; $i < strlen( $email_address ); $i++ ) {
+	for ( $i = 0, $len = strlen( $email_address ); $i < $len; $i++ ) {
 		$j = rand( 0, 1 + $hex_encoding );
 		if ( $j == 0 ) {
 			$email_no_spam_address .= '&#' . ord( $email_address[$i] ) . ';';
diff --git a/src/wp-includes/plugin.php b/src/wp-includes/plugin.php
index 3ec3a088d6..d3be2729d5 100644
--- a/src/wp-includes/plugin.php
+++ b/src/wp-includes/plugin.php
@@ -479,7 +479,7 @@ function do_action($tag, $arg = '') {
 		$args[] =& $arg[0];
 	else
 		$args[] = $arg;
-	for ( $a = 2; $a < func_num_args(); $a++ )
+	for ( $a = 2, $num = func_num_args(); $a < $num; $a++ )
 		$args[] = func_get_arg($a);
 
 	// Sort