PHP获取城市及天气预报 生成图片

PHP获取城市及天气预报 生成图片

图片的大小为 500 x 200 px

代码如下:

<?php
/**
 *  获取天气生成图片   By 简爱 http://www.gouji.org
 *
 * 所需文件：
 *   字体
 *     ./font/simsun.ttc
 *     ./font/msyh.ttf
 *     ./font/hyzy.ttf
 *
 *   城市 ID 数据
 *     ./city.php
 *
 *   图片
 *     ./tq.gif
**/

$ip = get_ip(); // 获取 IP
$city_cn = get_city($ip); // 获取 城市

//获取城市 ID  $city_id
$file ='./city.php';  // 保存城市ID数组的文件（城市名为 key 值为对应 城市ID）
$arr  = require $file;

if(array_key_exists($city_cn, $arr)){ // 判断是否存在指定城市
  $city_id = $arr[$city_cn];
}else{
  $city_id = "101010100"; // 不存在 设置为 北京 ID
}

$tq_j = get_tq($city_id);
$tq_s = json_decode($tq_j, true);

$text1 = $tq_s['weatherinfo']['date_y']." ".$tq_s['weatherinfo']['week']."\r\n";
$text1 .= "城市：".$tq_s['weatherinfo']['city']."\r\n";
$text1 .= "今天：".$tq_s['weatherinfo']['weather1']."  ".get_wd($tq_s['weatherinfo']['temp1']).$tq_s['weatherinfo']['wind1']."\r\n";
$text1 .= "明天：".$tq_s['weatherinfo']['weather2']."  ".get_wd($tq_s['weatherinfo']['temp2']).$tq_s['weatherinfo']['wind2']."\r\n";
$text1 .= "后天：".$tq_s['weatherinfo']['weather3']."  ".get_wd($tq_s['weatherinfo']['temp3']).$tq_s['weatherinfo']['wind3']."\r\n";

//获取时间日期
$time_now = gmdate("G:i:s",time()+8*3600);
$date_now = gmdate("Y年m月d日",time()+8*3600);
$day_now = gmdate("w",time()+8*3600);

$mweek=array(0=>"星期日",1=>"星期一",2=>"星期二",3=>"星期三",
    4=>"星期四",5=>"星期五",6=>"星期六");
$week=$mweek[$day_now];


//设置字体
$font = './font/simsun.ttc';
$font2 = './font/msyh.ttf';
$font_n = './font/hyzy.ttf';

$font_size = '13'; //文字大小
$font_size_2 = '11';

$fontx1 = '15';  //text1 位置 x
$fonty1 = '50';  //text1 位置 y
$fontx2 = '30'; //text2 位置 x
$fonty2 = '21';  //text2 位置 y

$text2 = "天气 by 简爱 -- ".$date_now." ".$week." ".$time_now;

//设置 文件头
header("Content-type: image/png");

$im = imagecreatefromgif("./tq.gif");

//定义颜色
$grey  = imagecolorallocate($im, 0, 255, 0);
$black = ImageColorAllocate($im, 0,0,0);//定义黑色的值
$yellow = ImageColorAllocate($im, 255,255,128);//定义黄色的值
$white = ImageColorAllocate($im, 255,255,255);//定义白色的值
$red = ImageColorAllocate($im, 255,0,0);//定义红色的值
$blue = ImageColorAllocate($im, 0x33,0x99,0xff);//定义蓝色色的值
$green = ImageColorAllocate($im, 0x66,0x99,0x00);//定义绿色的值

$text1s = $grey;
$text2s = $black;

//写字 参数：(图像，字号，  透明度，字体文件，X坐标， Y坐标，    颜色，  字体，文字)
imagettftext($im, $font_size, 0, $fontx1, $fonty1, $text1s, $font, $text1);
imagettftext($im, $font_size_2, 0, $fontx2, $fonty2, $text2s, $font2, $text2);
imagettftext($im, 16, 0, 115, 180, $red, $font_n, "Powered by GouJi.org");

imagegif($im);
imagedestroy($im);



//获取IP
function get_ip(){
	$ip = isset($_SERVER['REMOTE_ADDR']) ? $_SERVER['REMOTE_ADDR'] : '';
	if (!ip2long($ip)) {
		$ip = '';
	}
	return $ip;
}

//通过IP 获取城市
function get_city($ip){
  $url = "http://int.dpool.sina.com.cn/iplookup/iplookup.php?ip=".$ip;
  $dz = file_get_contents($url);
  $di = split('	',$dz);
  //print_r($di);
  return $di[5];
}

//通过ID 获取天气
function get_tq($city_id){
  $url = "http://m.weather.com.cn/data/".$city_id.".html";
  $txt = file_get_contents($url);
  return $txt;
}

//分割温度 （℃ 在生成图片时不显示）
function get_wd($wd){
  $wd_z = strlen($wd);
  $wd_s = strrpos($wd,"~");
  $wd_1 = substr($wd,0,$wd_s-3);
  $wd_2 = substr($wd,$wd_s+1,$wd_z-$wd_s-4);
  return $wd_1."~".$wd_2." 度  ";
}

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