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Can anyone explain what the $PHP_SELF global variable does in the following script? <html> <body> <?php $db = mysql_connect("localhost", "root"); mysql_select_db("mydb",$db); $result = mysql_query("SELECT * FROM employees",$db); if ($myrow = mysql_fetch_array($result)) { do { printf("<a href=\"%s?id=%s\">%s %s</a><br>\n", $PHP_SELF, $myrow["id"], $myrow["first"], $myrow["last"]); } while ($myrow = mysql_fetch_array($result)); } else { echo …
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