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                判斷數字的大小是否在某個范圍內,如果僅僅是判斷是否為數字無需使用。 ~~~ #---------------------------------------------------------- # 判斷數字大小,無大小的判斷可以用系統帶的 is_numeric($str) #---------------------------------------------------------- Function isNumber ($fNum, $fMin="", $fMax="") { if ( eregi("^[0-9]+$", $fNum) ) { if ( "" == $fMax && "" == $fMin ) { Return True; } elseif ( "" == $fMin && $fNum <= $fMax ) { Return True; } elseif ( "" == $fMax && $fNum >= $fMin ) { Return True; } elseif ( $fNum >= $fMin && $fNum <= $fMax ) { Return True; } else { Return False; } } else { Return False; } } ~~~
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