php学习之路
1.php拼接字符串+查询
$floor_id = M('house_floor_input')->where($map1)->field('id')->select();
$floor_id_str = '';
foreach ($floor_id as $k => $v) {
//去，
if($k==count($floor_id)-1){
$floor_id_str .= $v['id'];
}
//拼接条件带，
else{
$floor_id_str .= $v['id'].',';
}
}
$map['f_id'] = array('in',$floor_id_str);
$list = M('house_input')->where($map)->order('id desc')->select();
3.php拆分
//查看该房型详细内容
$info = M('house_floor_input')->where(array('token' =>get_token() ,'f_name'=>I('id') ))->find();
//特色字段的拆分
$feature = explode(',', $info['f_features']);
$this->assign('feature',$feature);
2.php模糊查询
$map1['f_name'] = array('like','%'.I('lpname').'%');
3.getField获取单挑
$floorinput = M('house_floor_input')->where($map1)->getField('f_name');
4.field获取集合
$floor_id = M('house_floor_input')->where($map1)->field('id')->select();
5.php前端页面运用三元表达式
<a {$type == '1' ? 'class="nav_item active"' : 'class="nav_item flex-box-1"'} href="{:U('index',array('type'=>1))}">最热</a>
<li class="miaosha" <if condition="$fy['h_tuijian'] neq 1">style="display:none"</if> ><div>马上秒杀</div></li>
6.去重查询
$project = M('dreammore_support_person')->distinct(true)->where(array('p_token'=>get_token(),'p_openid'=>get_openid()))->getField('p_project_id',true);
7.php ajax提交
var url="{:U('loginAuth','','')}";
$.ajax({
url:url,
data:"account=" + account + "&password=" + password,
type:"post",
dataType:"json",
error:function(){errorPrompt('账户或密码错误');},
success:function(data){
if (data == "success") {
window.location.href = $("#url").val();
}
}
});
8.thinkphp中的比较符号
Thinkphp中eq,neq,gt,lt等表达式缩写
neq 不等于
gt 大于
egt 大于等于
lt 小于
elt 小于等于
like LIKE
between BETWEEN
notnull IS NUT NULL
null IS NULL
/*thinkphp在另一个问题中的回帖*/
egf 是表示数据库的字段比较，而非字符串比较
例如：
$map['name'] = array('eq','label'); 和
$map['name'] = array('eqf','label');
分别代表 name = 'label' 和 name = label
同样的道理，gt lt 等其他表达式也可以在后面添加f来表示同样的功能~
$myCouponOrder = M('house_coupon_order')->where(array('token'=>get_token(),'openid'=>$openid))->select();
foreach ($myCouponOrder as $c_id => &$vo1) {
$id = $vo1['c_id'];
$myCouponDetail = M('house_coupon')->where(array('id'=>$id))->find();
$myCouponDetails[$id]['c_detail'] = $myCouponDetail;
}
$this->assign('myCouponDetails',$myCouponDetails);
输出前台
<volist name="myCouponDetails" id="vo1">
<li class="ui-border-t">
<div class="ui-list-img">
<span style="background-image:url({$vo1['c_detail']['c_picture']|get_cover_url}); background-size:100%;"></span>
</div>
<div class="ui-list-info">
<h4 class="ui-nowrap lp-title">{$vo1['c_detail']['c_title']}</h4>
<p class="ui-nowrap">总量：{$vo1['c_detail']['c_total']}</p>
<p class="ui-nowrap">已秒杀：{$vo1['c_detail']['c_skilledCount']}</p>
<h5 class="ui-nowrap n-price">￥{$vo1['c_detail']['c_skillprice']}元</h5>
<p class="ui-nowrap fav-box"><i class="ui-icon-emo"></i>感兴趣：{$vo1['c_detail']['c_hot']}</p>
<button class="wantosee" name="test" type="button" value="val">
<a href="{:U('coupondetail',array('c_id'=>$vo1['c_detail']['id']))}">查看详情</a>
</button>
</div>
</li>
</volist>
11.php导出excel
//导出活动支付
public function exportExecel(){
$map['c_title'] = I('c_title');
$map['token'] = get_token();
$row = M('house_coupon_order')->where($map)->select();
$filename=$map['c_title'].date('Y-m-d').".xls";//先定义一个excel文件
header("Content-Type: application/vnd.ms-execl");
header("Content-Type: application/vnd.ms-excel; charset=utf-8");
header("Content-Disposition: attachment; filename=$filename");
header("Pragma: no-cache");
header("Expires: 0");
echo codeutf8("订单号")."\t";
echo codeutf8("商品名")."\t";
echo codeutf8("支付金额")."\t";
echo codeutf8("客户名")."\t";
echo codeutf8("联系方式")."\t";
echo codeutf8("下单时间")."\n";
foreach ($row as $key => $vo) {
echo codeutf8($vo['orderid'])."\t";
echo codeutf8($vo['c_title'])."\t";
echo codeutf8($vo['price'])."\t";
echo codeutf8($vo['name'])."\t";
echo codeutf8($vo['phone'])."\t";
echo codeutf8($vo['ctime'])."\n";
}
}
//导出excel编码标题（防止乱码）
function codeutf8($str){
return iconv("utf-8","gb2312",$str);
}
12. implode和explode
$imags = array([0]=123,[1]=345,[2]=121)
$imags = implode(',', $imgs);
$imags = explode(',',$imags ,-1);
var_dump($imags);
array([0]=123,[1]=345,[2]=121)
13.json
// public function vote_index_json(){
// $database = C('DB_NAME');
// $table = C('DB_PREFIX').mengvote_baoming;
// $host = C('DB_HOST');
// $user = C('DB_USER');
// $pwd = C('DB_PWD');
// $link = mysql_connect("".$host."","".$user."","".$pwd."");
// $sql = "use ".$database."";
// mysql_query($sql,$link);
// $sql = "set names utf8";
// mysql_query($sql,$link);
// $num = $_POST['num'] *10;
// if($_POST['num'] != 0) $num +1;
// $sql = "select id,m_no,m_name from ".$table." limit ".$num.",10";
// $result = mysql_query($sql,$link);
// $temp_arr = array();
// while($row = mysql_fetch_assoc($result)){
// $temp_arr[] = $row;
// }
// $json_arr = array();
// foreach($temp_arr as $k=>$v){
// $json_arr[] = (object)$v;
// }
// //print_r($json_arr);die;
// echo json_encode( $json_arr );
// }
13.html嵌套php
<?php
$img = $info['m_img'];
$array=explode(',',$img);
$imgs = explode(',',$img,-1);
//数组长度
$len = count($array);
//$imgs = explode(',',$img,-1);
for($i=0; $i < $len; $i++) { ?>
<img src="<?php echo get_cover_url($imgs[$i]); ?>" alt="">
<?php
}
?>
14 json html();
var that = $('#mainPage .user-info ul li .location1'),_html='';
var url="{:U('addressManagement','','')}";
$.ajax({
url:url,
data:"username=" + username + "&userphone=" + userphone+ "&province=" + province+ "&city=" + city+ "&dist=" + dist+ "&address=" + address+ "&community=" + community+ "&area=" + area,
type:"post",
dataType:"json",
error:function(){errorPrompt('账户或密码错误');},
success:function(data){
alert(data.length);
_html ='<span class="title">'+data[0]['user_name']+'</span>'+
'<span class="content">'+
'<span class="btn-link">'+data[0]['user_phone']+'</span><br>'+
'<span class="address">'+data[0]['user_address']+'</span>'+
'</span>'+
'<i class="icon arrow"></i>';
that.html(_html);
$("#mainPage").attr('style','position:absolute;left:0%;');
$("#addressPage").attr('style','position:absolute;left:-100%;');
$("#addressListPage").attr('style','position:absolute;left:-100%;');
$("#addressEditPage").attr('style','position:relative;left:-100%;');
}
});
});
each
$(".location1").click(function(){
var that = $('#addressPage .order-address ul'),_html='';
var url="{:U('addressNew','','')}";
$.ajax({
url:url,
type:"post",
dataType:"json",
success:function(data){
$.each(data, function(idx, obj) {
_html += '<li><a href="javascript:void(0);">'+
'<label data-id="178717" class="active">'+
'<p class="c333">'+
'<span class="name">'+obj.user_name+'</span>'+
'<span class="tel">'+obj.user_phone+'</span>'+
'</p>'+
'<p class="c999 address">'+obj.user_address+'</p>'+
'</label></a></li>';
});
that.html(_html);
}
});
$("#mainPage").attr('style','position:absolute;left:-100%;');
$("#addressPage").attr('style','position:absolute;left:0%;');
$("#addressListPage").attr('style','position:absolute;left:-100%;');
$("#addressEditPage").attr('style','position:relative;left:-100%;');
});
15.ajax 请求到数据库加载到html，用jquery获取加载后html中的元素的方法
$(document).ready(function(e) {
$("#addressPage .order-address ul").delegate("li","click",function(){
var username = $(this).children('a').children('label').children('p:first').children('span:first').text();
var userphone = $(this).children('a').children('label').children('p:first').children('span:last').text();
var useraddress = $(this).children('a').children('label').children('p:last').text();
$('#mainPage .user-info .location1').children('span:first').text(username);
$('#mainPage .user-info .location1').children('span:last').children('span:first').text(userphone);
$('#mainPage .user-info .location1').children('span:last').children('span:last').text(useraddress);
$("#mainPage").attr('style','position:absolute;left:0%;');
$("#addressPage").attr('style','position:absolute;left:-100%;');
$("#addressListPage").attr('style','position:absolute;left:-100%;');
$("#addressEditPage").attr('style','position:relative;left:-100%;');
});
$("#addressListPage ul.b").delegate('li','click',function(){
var name = $(this).children('a').children('label').children('p:first').children('span:first').text();
var tel = $(this).children('a').children('label').children('p:first').children('span:last').text();
var address = $(this).children('a').children('label').children('p:last').text();
$("#mainPage").attr('style','position:absolute;left:-100%;');
$("#addressPage").attr('style','position:absolute;left:-100%;');
$("#addressListPage").attr('style','position:absolute;left:-100%;');
$("#addressEditPage").attr('style','position:relative;left:0%;');
});
});
16.mb_substr()
一、中文截取：mb_substr()
mb_substr( $str, $start, $length, $encoding )
$str，需要截断的字符串
$start，截断开始处，起始处为0
$length，要截取的字数
$encoding，网页编码，如utf-8,GB2312,GBK
实例：
复制代码代码如下:
$str='脚本之家：http://www.jb51.net';
echo mb_substr($str,0,4,'utf-8');//截取头5个字，假定此代码所在php文件的编码为utf-8
?>
结果显示：脚本之家
二、获取中文长度:mb_strlen()
mb_strlen( $str, $encoding )
$str，要计算长度的字符串
$encoding，网页编码，如utf-8,GB2312,GBK
实例：
复制代码代码如下:
$str='脚本之家：http://www.jb51.net';
echo mb_strlen($str,'utf-8');//假定此代码所在php文件的编码为utf-8
?>
结果显示：24
17.计算两个时间戳之间的差
| function timediff($begin_time,$end_time) { if($begin_time < $end_time){ $starttime = $begin_time; $endtime = $end_time; } else{ $starttime = $end_time; $endtime = $begin_time; } $timediff = $endtime-$starttime; $days = intval($timediff/86400); $remain = $timediff%86400; $hours = intval($remain/3600); $remain = $remain%3600; $mins = intval($remain/60); $secs = $remain%60; $res = array("day" => $days,"hour" => $hours,"min" => $mins,"sec" => $secs); return $res; } |
18.判断是否微信内置浏览器
/**
* 判断是否微信内置浏览器
*/
function isWeixin() {
var ua = navigator.userAgent.toLowerCase();
if (ua.match(/microMessenger/i) == "micromessenger") {
return true;
} else {
return false;
}
}