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Made a Function_PHP tutorial to detect whether the transmitted parameter is a number
- WBOYOriginal
- 2016-07-21 15:59:27799browse
/*Determine whether the transmitted data is a number
Use regular expressions to determine whether the entered number is legal
Call: checknum (parameter 1, parameter 2)
*/
Copy code The code is as follows:
function checknum($id,$say)
{
$inid=$id;
if(! ereg("^(-{0,1}|+{0,1})[0-9]+(.{0,1}[0-9]+)$",$inid))
{
echo $say.", entrance: "."".$inid."";
exit;
} }
}
{
$inid=$id;
if(! ereg("^(-{0,1}|+{0,1})[0-9]+(.{0,1}[0-9]+)$",$inid))
{
echo $say.", entrance: "."".$inid."";
exit;
} }
}
Call
Copy code The code is as follows:
$tid="111fff";
checknum($tid,"Illegal number")
?>
checknum($tid,"Illegal number")
?>
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