These tests don't work when run as root

ext/posix/tests/posix_seteuid_variation2.phpt

@@ -3,6 +3,7 @@ Test function posix_seteuid() by substituting argument 1 with boolean values.
 --SKIPIF--
 <?php 
         if(!extension_loaded("posix")) print "skip - POSIX extension not loaded"; 
+        if(posix_geteuid() == 0) print "skip - Cannot run test as root.";
 ?>
 --CREDITS--
 Marco Fabbri mrfabbri@gmail.com

ext/posix/tests/posix_seteuid_variation3.phpt

@@ -3,6 +3,7 @@ Test function posix_seteuid() by substituting argument 1 with emptyUnsetUndefNul
 --SKIPIF--
 <?php 
         if(!extension_loaded("posix")) print "skip - POSIX extension not loaded"; 
+        if(posix_geteuid() == 0) print "skip - Cannot run test as root.";
 ?>
 --CREDITS--
 Marco Fabbri mrfabbri@gmail.com

ext/posix/tests/posix_seteuid_variation4.phpt

@@ -3,6 +3,7 @@ Test function posix_seteuid() by substituting argument 1 with float values.
 --SKIPIF--
 <?php 
         if(!extension_loaded("posix")) print "skip - POSIX extension not loaded"; 
+        if(posix_geteuid() == 0) print "skip - Cannot run test as root.";
 ?>
 --CREDITS--
 Marco Fabbri mrfabbri@gmail.com

ext/posix/tests/posix_seteuid_variation5.phpt

@@ -3,6 +3,7 @@ Test function posix_seteuid() by substituting argument 1 with int values.
 --SKIPIF--
 <?php 
         if(!extension_loaded("posix")) print "skip - POSIX extension not loaded"; 
+        if(posix_geteuid() == 0) print "skip - Cannot run test as root.";
 ?>
 --CREDITS--
 Marco Fabbri mrfabbri@gmail.com

ext/posix/tests/posix_setgid_variation2.phpt

@@ -3,6 +3,7 @@ Test function posix_setgid() by substituting argument 1 with boolean values.
 --SKIPIF--
 <?php 
         if(!extension_loaded("posix")) print "skip - POSIX extension not loaded"; 
+        if(posix_geteuid() == 0) print "skip - Cannot run test as root.";
 ?>
 --CREDITS--
 Marco Fabbri mrfabbri@gmail.com
@@ -36,4 +37,4 @@ bool(false)
 bool(false)
 bool(false)
 ===DONE===
-	
+	

ext/posix/tests/posix_setgid_variation3.phpt

@@ -7,6 +7,7 @@ Francesco Fullone ff@ideato.it
 --SKIPIF--
 <?php
         if(!extension_loaded("posix")) print "skip - POSIX extension not loaded";
+        if(posix_geteuid() == 0) print "skip - Cannot run test as root.";
 ?>
 --FILE--
 <?php

ext/posix/tests/posix_setgid_variation4.phpt

@@ -3,6 +3,7 @@ Test function posix_setgid() by substituting argument 1 with float values.
 --SKIPIF--
 <?php 
         if(!extension_loaded("posix")) print "skip - POSIX extension not loaded"; 
+        if(posix_geteuid() == 0) print "skip - Cannot run test as root.";
 ?>
 --CREDITS--
 Marco Fabbri mrfabbri@gmail.com
@@ -38,4 +39,4 @@ bool(false)
 bool(false)
 bool(false)
 ===DONE===
-	
+	

ext/posix/tests/posix_setgid_variation5.phpt

@@ -3,6 +3,7 @@ Test function posix_setgid() by substituting argument 1 with int values.
 --SKIPIF--
 <?php 
         if(!extension_loaded("posix")) print "skip - POSIX extension not loaded"; 
+        if(posix_geteuid() == 0) print "skip - Cannot run test as root.";
 ?>
 --CREDITS--
 Marco Fabbri mrfabbri@gmail.com
@@ -34,4 +35,4 @@ bool(false)
 bool(false)
 bool(false)
 ===DONE===
-	
+	

ext/posix/tests/posix_setuid_variation2.phpt

@@ -3,6 +3,7 @@ Test function posix_setuid() by substituting argument 1 with boolean values.
 --SKIPIF--
 <?php 
         if(!extension_loaded("posix")) print "skip - POSIX extension not loaded"; 
+        if(posix_geteuid() == 0) print "skip - Cannot run test as root.";
 ?>
 --CREDITS--
 Marco Fabbri mrfabbri@gmail.com

ext/posix/tests/posix_setuid_variation3.phpt

@@ -3,6 +3,7 @@ Test function posix_setuid() by substituting argument 1 with emptyUnsetUndefNull
 --SKIPIF--
 <?php 
         if(!extension_loaded("posix")) print "skip - POSIX extension not loaded"; 
+        if(posix_geteuid() == 0) print "skip - Cannot run test as root.";
 ?>
 --CREDITS--
 Marco Fabbri mrfabbri@gmail.com

ext/posix/tests/posix_setuid_variation4.phpt

@@ -3,6 +3,7 @@ Test function posix_setuid() by substituting argument 1 with float values.
 --SKIPIF--
 <?php 
         if(!extension_loaded("posix")) print "skip - POSIX extension not loaded"; 
+        if(posix_geteuid() == 0) print "skip - Cannot run test as root.";
 ?>
 --CREDITS--
 Marco Fabbri mrfabbri@gmail.com

ext/posix/tests/posix_setuid_variation5.phpt

@@ -3,6 +3,7 @@ Test function posix_setuid() by substituting argument 1 with int values.
 --SKIPIF--
 <?php 
         if(!extension_loaded("posix")) print "skip - POSIX extension not loaded"; 
+        if(posix_geteuid() == 0) print "skip - Cannot run test as root.";
 ?>
 --CREDITS--
 Marco Fabbri mrfabbri@gmail.com