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php中filter函数验证、过滤用户输入的数据示例代码 - 站长搜索
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php中filter函数验证、过滤用户输入的数据示例代码

PHP 2014-12-16 01:48:04 转载来源: 网络整理/侵权必删

本文是一个php中filter函数验证、过滤用户输入的数据示例代码,感兴趣的同学参考下. PHP Filter 简介 PHP 过滤器用于对来自非安全来源的数据(比如用户输入)进行验证和过滤。 //除去html标签,或除去编码特殊字符 var_dump(filter_var("<html>中文ABC@#</html><script>abc</script><b>BBB</b><span>",FILTER_SANITIZE_STRING)); //url_encoded编码,除去或编码特殊字符 var_dump(filter_var("http://中文啊",FILTER_SANITIZE_ENCODED)); //html转义字符""<>&以及ASCII值小于32的字符

本文是一个phpfilter函数验证过滤用户输入数据示例代码,感兴趣的同学参考下.


PHP Filter 简介

PHP 过滤器用于对来自非安全来源的数据(比如用户输入)进行验证和过滤。


//除去html标签,或除去编码特殊字符
var_dump(filter_var("<html>中文ABC@#</html><script>abc</script><b>BBB</b><span>",FILTER_SANITIZE_STRING));

//url_encoded编码,除去或编码特殊字符
var_dump(filter_var("http://中文啊",FILTER_SANITIZE_ENCODED));

//html转义字符""<>&以及ASCII值小于32的字符。
var_dump(filter_var("<A&B#">",FILTER_SANITIZE_SPECIAL_CHARS));

//删除所有字符,除了字母、数字以及 !#$%&'*+-/=?^_`{|}~@.[]
var_dump(filter_var("AS$&><",FILTER_SANITIZE_EMAIL));

//删除所有字符,除了字母、数字以及 $-_.+!*'(),{}|^~[]`<>#%";/?:@&=
var_dump(filter_var("k<>!",FILTER_SANITIZE_URL));

//删除所有字符,除了数字和+-外
var_dump(filter_var("123ABC++",FILTER_SANITIZE_NUMBER_INT));

//删除所有字符,除了数字、+- 以及 .,eE。
var_dump(filter_var("mm.,pp",FILTER_SANITIZE_NUMBER_FLOAT));

//应用addslashes
var_dump(filter_var("aa//''",FILTER_SANITIZE_MAGIC_QUOTES));

//在指定的范围以整数验证值
var_dump(filter_var(20,FILTER_VALIDATE_INT,array("options"=>array("min_range"=>10,"max_range"=>51))));

//如果是 "1", "true", "on" 以及 "yes",则返回 true,如果是 "0", "false", "off", "no" 以及 "",则返回 false。否则返回 NULL。
var_dump(filter_var(1,FILTER_VALIDATE_BOOLEAN));

//以浮点数验证值。
var_dump(filter_var(222,FILTER_VALIDATE_FLOAT));

//验证URL
var_dump(filter_var("http://www.baidu.com",FILTER_VALIDATE_URL));

//验证email
var_dump(filter_var("abcd@123.com",FILTER_VALIDATE_EMAIL));

//验证IP地址
var_dump(filter_var("1.1.1.266",FILTER_VALIDATE_IP));

标签: php filter 函数 验证 过滤 用户 输入 数据 示例


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