explode and foreach to show strings or ASCII

//transfer ASCII to string $string = “78b101b116b87b105b110b100”; $tags = explode(‘b’, $string);  foreach($tags as $key) { echo chr($key);  } //transfer string toASCII echo “<br><br>”; $string = “Tiger Young”; foreach($tags as $key) { echo ord($key).”b”;  } echo “<br><br>”;

wp-includes\taxonomy.php on line 1518

I am using XAMPP, and wordpress 3.0.4, today when I want to show all post, the following error message shows: Fatal error: Allowed memory size of 33554432 bytes exhausted (tried to allocate 32768 bytes) in D:\xampp\htdocs\wp\specsexpert\wp-includes\taxonomy.php on line 1518