PHP面向对象练习
Posted 程昱仲德
tags:
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练习内容:随机生成一个字符串
代码:
<?php
class randstring{
private $length;
private $type;
private $one = array(0,1,2,3,4,5,6,7,8,9);
private $two = array(0,1,2,3,4,5,6,7,8,9,\'a\',\'b\',\'c\',\'d\',\'e\',\'f\',\'g\',\'h\',\'i\',\'j\',\'k\',\'l\',\'m\',\'n\',\'o\',\'p\',\'q\',\'r\',\'s\',\'t\',\'u\',\'v\',\'w\',\'x\',\'y\',\'z\');
private $three = array(\'a\',\'b\',\'c\',\'d\',\'e\',\'f\',\'g\',\'h\',\'i\',\'j\',\'k\',\'l\',\'m\',\'n\',\'o\',\'p\',\'q\',\'r\',\'s\',\'t\',\'u\',\'v\',\'w\',\'x\',\'y\',\'z\',0,1,2,3,4,5,6,7,8,9,\'A\',\'B\',\'C\',\'D\',\'E\',\'F\',\'G\',\'H\',\'I\',\'J\',\'K\',\'L\',\'M\',\'N\',\'O\',\'P\',\'Q\',\'R\',\'S\',\'T\',\'U\',\'V\',\'W\',\'X\',\'Y\',\'Z\');
function __construct($l,$t){
$this->length = $l;
$this->type = $t;
}
public function getString(){
if($this->type == 1){
$arr = array_rand($one,$this->length);
$string = explode("",$arr);
return $string;
}else if($this->type == 2){
$arr1 = array();
$arr = array_rand($this->two,$this->length);
for($i=0;$i<count($arr);$i++){
array_push($arr1,$this->two[$arr[$i]]);
}
echo implode("",$arr1);
}else if($this->type == 3){
$arr1 = array();
$arr = array_rand($this->three,$this->length);
for($i=0;$i<count($arr);$i++){
array_push($arr1,$this->three[$arr[$i]]);
}
echo implode("",$arr1);
}else{
echo \'参数错误!\';
}
}
}
$randstr = new randstring(10,2);
$randstr->getString();
?>
一些函数:
implode()讲数组转换为字符串,可添加分隔符
array_rand() 随机抽取数组内元素的索引,如果加入第二个参数,则返回一个索引组成的数组。
array_push() 将数值填入到一个数组中
效果图:
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