1，$sql=select * from huiyuan where id=1;
list($sel, $sql) = spliti("FROM", $sql);
2，if (!ereg("^[0-9]+$",$id12) {$a=1;}
1、
list($sel, $sql) = preg_split("/FROM/i", $sql);if (!preg_match("/^[0-9]+$/",$id12)) {$a=1;}
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