Phantom $_SERVER contents?

[chrisjj]

Can anyone explain this funny?

<?php  echo phpversion(); // says 4.1.2 
echo "<br>";var_dump( preg_match("'veryunusualstring'",implode("\n",array())) );  // says int(0)
echo "<br>";var_dump( in_array("veryunusualstring",array()) ) ; // says bool(false)
echo "<br>";var_dump( preg_match("'veryunusualstring'",implode("\n",$_SERVER)) ); // says int(0)
echo "<br>";var_dump( in_array("veryunusualstring",$_SERVER) ) ; // says bool(true)  !!!  ?>

e.g. http://www.mail-fish.co.uk/test/serverarray.php

Thanks.

[chrisjj]

Anyone? Surely in_array's finding of "veryunusualstring" in $_SERVER is in error.