PHP判断FORM表单或URL参数来的数据是否为整数的方法_PHP
PHP判断FORM表单或URL参数来的数据是否为整数,is_int函数对于FORM表单或URL参数过来的数据是没有办法判断是否是整数的,因为FORM过来的是字符串。
用is_numeric可以判断是否为数字类型,再判断是否有小数点就可以判断是不是整数了
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有时候我们需要判断id是否为数字的方法:
dedecms中的判断数字的方法
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建议大家对关键的参数必须做过滤。如数字正则过滤
代码如下:
if(preg_match("/^\d*$/",$fgid)) echo('是数字');
else echo('不是数字');
或者用函数
代码如下:
if(is_numeric($fgid)) echo('是数字');
else echo('不是数字');

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