php的curl与json

下面是菜鸟教程的几种curl的形式

<?php function geturl($url){ $headerArray =array("Content-type:application/json;","Accept:application/json"); $ch = curl_init(); curl_setopt($ch, CURLOPT_URL, $url); curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE); curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE); curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); curl_setopt($url,CURLOPT_HTTPHEADER,$headerArray); $output = curl_exec($ch); curl_close($ch); $output = json_decode($output,true); return $output; } function posturl($url,$data){ $data = json_encode($data); $headerArray =array("Content-type:application/json;charset='utf-8'","Accept:application/json"); $curl = curl_init(); curl_setopt($curl, CURLOPT_URL, $url); curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, FALSE); curl_setopt($curl, CURLOPT_SSL_VERIFYHOST,FALSE); curl_setopt($curl, CURLOPT_POST, 1); curl_setopt($curl, CURLOPT_POSTFIELDS, $data); curl_setopt($curl,CURLOPT_HTTPHEADER,$headerArray); curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1); $output = curl_exec($curl); curl_close($curl); return json_decode($output，true); } function puturl($url,$data){ $data = json_encode($data); $ch = curl_init(); //初始化CURL句柄 curl_setopt($ch, CURLOPT_URL, $url); //设置请求的URL curl_setopt ($ch, CURLOPT_HTTPHEADER, array('Content-type:application/json')); curl_setopt($ch, CURLOPT_RETURNTRANSFER,1); //设为TRUE把curl_exec()结果转化为字串，而不是直接输出 curl_setopt($ch, CURLOPT_CUSTOMREQUEST,"PUT"); //设置请求方式 curl_setopt($ch, CURLOPT_POSTFIELDS, $data);//设置提交的字符串 $output = curl_exec($ch); curl_close($ch); return json_decode($output,true); } function delurl($url,$data){ $data = json_encode($data); $ch = curl_init(); curl_setopt ($ch,CURLOPT_URL,$put_url); curl_setopt ($ch, CURLOPT_HTTPHEADER, array('Content-type:application/json')); curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1); curl_setopt ($ch, CURLOPT_CUSTOMREQUEST, "DELETE"); curl_setopt($ch, CURLOPT_POSTFIELDS,$data); $output = curl_exec($ch); curl_close($ch); $output = json_decode($output,true); } function patchurl($url,$data){ $data = json_encode($data); $ch = curl_init(); curl_setopt ($ch,CURLOPT_URL,$url); curl_setopt ($ch, CURLOPT_HTTPHEADER, array('Content-type:application/json')); curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1); curl_setopt ($ch, CURLOPT_CUSTOMREQUEST, "PATCH"); curl_setopt($ch, CURLOPT_POSTFIELDS,$data); //20170611修改接口，用/id的方式传递，直接写在url中了 $output = curl_exec($ch); curl_close($ch); $output = json_decode($output); return $output; } ?>

json_decode

<?php $json = '{"a":1,"b":2,"c":3,"d":4,"e":5}'; var_dump(json_decode($json)); var_dump(json_decode($json, true)); ?> 上例将输出： object(stdClass)#1 (5) { ["a"] => int(1) ["b"] => int(2) ["c"] => int(3) ["d"] => int(4) ["e"] => int(5) } array(5) { ["a"] => int(1) ["b"] => int(2) ["c"] => int(3) ["d"] => int(4) ["e"] => int(5) }

可以看出 json_decode($data,true)输出的一个关联数组,由此可知json_decode($data)输出的是对象,而json_decode("$arr",true)是把它强制生成PHP关联数组.

get_object_vars()

php中get_object_vars()方法用法,实例分析了get_object_vars()方法获取对象中属性的使用技巧

$arr = get_object_vars($data); $id = $arr['id'];//获取属性为id的值

php自定义函数函数调用的方法

<?php function test1（参数1,参数2,....） //函数头 { 函数体; //任何有效的php代码都可以作为函数体使用 return 返回值; //可以从函数中返回一个值 } //调用 test(参数.....); ?>

file_get_contents()

<?php echo file_get_contents("test.txt"); ?>

输出

This is a test file with test text.

这个地方我请求的url然后里面有&符号，他总是给我转义为&l;导致请求不成功 比如我请求一个

http://localhost/name=a&password=b

然后经过他的里面一变就成了

http://localhost/name=a&password=b

这样请求都请求不到了，这个问题也是头痛，本来想用它来请求url获取数据的，结果搞了半天，我用了htmlspecialchars_decode() 的函数可以将&转化为&的，结果因为是在url中还是没弄出来，最后我就用了curl才把问题解决，也不知道什么原因。