1. 验证字符串长度
类(length_class.php):
<?php
class Length{
protected $min;
protected $max;
//$arr的输入格式为一个数组,如['min'=>19,'max'=>29]
function __construct($arr){
$this->min = $arr["min"];
$this->max = $arr["max"];
}
//如果$value字符串长度在min和max范围内,返回true
function validate($value){
if(strlen($value)>=$this->min && strlen($value)<=$this->max){
return true;
}else{
return false;
}
}
}
?>
调用(length.php):
<?php
require_once("length_class.php");
$ob = new Length(["min"=>10,"max"=>20]);
$re = $ob->validate("sjjsjsjjj");
if($re){
echo "字符串长度符合要求";
}else{
echo "字符串长度不符合要求";
}
?>
图:
2. 数字范围验证
类(age_class.php):
<?php
class Length{
protected $min;
protected $max;
//$arr的输入格式为一个数组,如['min'=>19,'max'=>29]
function __construct($arr){
$this->min = $arr["min"];
$this->max = $arr["max"];
}
//如果$value在min和max的范围中,返回true
function validate($value){
if($value>=$this->min && $value<=$this->max){
return true;
}else{
return false;
}
}
}
?>
调用(age.php):
<?php
require_once("age_class.php");
$ob = new Length(["min"=>10,"max"=>20]);
$re = $ob->validate(24);
if($re){
echo "年龄在10到20范围内";
}else{
echo "年龄不在规定范围内";
}
?>
图: