PHP中几个经常用到的实例

这篇文章给大家讲述了php实例相关的教程

1.php解析url并得到url中的参数

<?php
$url = 'http://www.baidu.com/index.php?m=content&c=index&a=lists&catid=6&area=0&author=0&h=0&region=0&s=1&page=1';
  
$arr = parse_url($url);
var_dump($arr);
$arr_query = convertUrlQuery($arr['query']);
var_dump($arr_query);
var_dump(getUrlQuery($arr_query));
  
/**
 * 将字符串参数变为数组
 * @param $query
 * @return array array (size=10)
     'm' => string 'content' (length=7)
     'c' => string 'index' (length=5)
     'a' => string 'lists' (length=5)
     'catid' => string '6' (length=1)
     'area' => string '0' (length=1)
     'author' => string '0' (length=1)
     'h' => string '0' (length=1)
     'region' => string '0' (length=1)
     's' => string '1' (length=1)
     'page' => string '1' (length=1)
 */
function convertUrlQuery($query)
{
    $queryParts = explode('&', $query);
    $params = array();
    foreach ($queryParts as $param) {
        $item = explode('=', $param);
        $params[$item[0]] = $item[1];
    }
    return $params;
}
  
/**
 * 将参数变为字符串
 * @param $array_query
 * @return string string 'm=content&c=index&a=lists&catid=6&area=0&author=0&h=0&region=0&s=1&page=1' (length=73)
 */
function getUrlQuery($array_query)
{
    $tmp = array();
    foreach($array_query as $k=>$param)
    {
        $tmp[] = $k.'='.$param;
    }
    $params = implode('&',$tmp);
    return $params;
}

2,利用正则表达式实现手机号码中间4位用星号（*）替换显示

<?php
//Method 1：
function hidtel($phone){
    $IsWhat = preg_match('/(0[0-9]{2,3}[\-]?[2-9][0-9]{6,7}[\-]?[0-9]?)/i',$phone); //固定电话
    if($IsWhat == 1){
        return preg_replace('/(0[0-9]{2,3}[\-]?[2-9])[0-9]{3,4}([0-9]{3}[\-]?[0-9]?)/i','$1****$2',$phone);
    }else{
        return  preg_replace('/(1[358]{1}[0-9])[0-9]{4}([0-9]{4})/i','$1****$2',$phone);
    }
}
//Method 2：
$num = "13966778888"
$str = substr_replace($num,'****',3,4);
 
//实例：
  
$phonenum = "13966778888";
echo hidtel($phonenum);
  
//最后输出：139****8888

3.php根据出生年月日计算生日 精确到xxxx年xx月xx天

<?php
function diffDate($date1,$date2){ 
$datestart= date('Y-m-d',strtotime($date1));
    if(strtotime($datestart)>strtotime($date2)){ 
        $tmp=$date2; 
        $date2=$datestart; 
        $datestart=$tmp; 
    } 
    list($Y1,$m1,$d1)=explode('-',$datestart); 
    list($Y2,$m2,$d2)=explode('-',$date2); 
    $Y=$Y2-$Y1; // 1
    $m=$m2-$m1; // 0
    $d=$d2-$d1; // -11
    if($d<0){ 
        $d+=(int)date('t',strtotime("-1 month $date2")); 
        $m=$m--; 
    } 
    if($m<0){ 
        $m+=12; 
        $y=$y--; 
    } 
    if($Y == 0 && $m == 0 && $d != 0){
return $d.'天';
    }elseif($Y == 0 && $m != 0 && $d != 0){
     return $m.'个月'.$d.'天';
    }elseif($Y != 0 && $m == 0 && $d != 0){
     return $Y.'年'.$d.'天';
    }else{
     return $Y.'年'.$m.'个月'.$d.'天';
    }
} 

4.php判断手机浏览还是web浏览

<?php
function isMobile(){  
    $useragent=isset($_SERVER['HTTP_USER_AGENT']) ? $_SERVER['HTTP_USER_AGENT'] : '';  
    $useragent_commentsblock=preg_match('|\(.*?\)|',$useragent,$matches)>0?$matches[0]:'';        
    function CheckSubstrs($substrs,$text){  
        foreach($substrs as $substr)  
            if(false!==strpos($text,$substr)){  
                return true;  
            }  
            return false;  
    }
    $mobile_os_list=array('Google Wireless Transcoder','Windows CE','WindowsCE','Symbian','Android','armv6l','armv5','Mobile','CentOS','mowser','AvantGo','Opera Mobi','J2ME/MIDP','Smartphone','Go.Web','Palm','iPAQ');
    $mobile_token_list=array('Profile/MIDP','Configuration/CLDC-','160×160','176×220','240×240','240×320','320×240','UP.Browser','UP.Link','SymbianOS','PalmOS','PocketPC','SonyEricsson','Nokia','BlackBerry','Vodafone','BenQ','Novarra-Vision','Iris','NetFront','HTC_','Xda_','SAMSUNG-SGH','Wapaka','DoCoMo','iPhone','iPod');  
           
    $found_mobile=CheckSubstrs($mobile_os_list,$useragent_commentsblock) ||  
              CheckSubstrs($mobile_token_list,$useragent);  
           
    if ($found_mobile){  
        return true;  
    }else{  
        return false;  
    }  
}
if (isMobile()){
    header('location: ./app/index.php');//如果为手机端，执行跳转
}
else{
    header('location: ./web/index.php');//如果非手机端，执行跳转
}

5.时间戳转时间格式,时间格式转xx小时前

<?php
/**
 * 将时间转换为 xx小时前
 * @param {Object} pTime
 */
function jsDateDiff(pTime) {
    var d_minutes, d_hours, d_days, d;
    var timeNow = parseInt(new Date().getTime() / 1000);
    pTime_new = new Date(pTime).getTime() / 1000;
    d = timeNow - pTime_new;
    d_days = parseInt(d / 86400);
    d_hours = parseInt(d / 3600);
    d_minutes = parseInt(d / 60);
    if (d_days > 0 && d_days < 4) {
        return d_days + "天前";
    } else if (d_days <= 0 && d_hours > 0) {
        return d_hours + "小时前";
    } else if (d_hours <= 0 && d_minutes > 0) {
        return d_minutes + "分钟前";
    } else {
        return pTime;
    }
}

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