note 27326 added to function.is-numeric

From: Date: Mon, 02 Dec 2002 11:21:13 +0000
Subject: note 27326 added to function.is-numeric
Groups: php.notes 
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If you want to make sure that a variable contains only one or more numbers as in the range 0-9, you could use this: eregi("[^0-9]",$var) This checks your variable for anything that is NOT in the range 0-9. If you use is_numeric() while checking an IP address, you should not be surprised if the following is accepted as a valid IP: 1e13.3.4.12e3 -> is_numeric() considers 1e13 and 12e3 as valid numeric values (which is correct). Have fun. Martijn Tigchelaar, DataServe. -- http://www.php.net/manual/en/function.is-numeric.php http://master.php.net/manage/user-notes.php?action=edit+27326 http://master.php.net/manage/user-notes.php?action=delete+27326 http://master.php.net/manage/user-notes.php?action=reject+27326

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