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<is_nullis_object>
Last updated: Mon, 16 Jul 2012

is_numeric

(PHP 4, PHP 5)

is_numeric --  检测变量是否为数字或数字字符串

描述

bool is_numeric ( mixed var )

如果 var 是数字和数字字符串则返回 TRUE,否则返回 FALSE

参见 is_bool()is_float()is_int()is_string()is_object()is_array()is_integer()




<is_nullis_object>
 Last updated: Mon, 16 Jul 2012
 
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