php如何向header头添加Authorization信息？
php如何向header头添加Authorization信息？
php中，在header头添加Authorization信息需要在curl_exec()方法执行命令前，使用curl_setopt()方法添加Authorization信息。
具体介绍：
为了便于使用，这里定义一个get_data（）函数来实现Authorization信息的传递，函数中有三个参数，第一个是发送请求的url，第二个是Authorization信息中的账号，第三个参数是Authorization信息中的密码。
Authorization信息使用curl来传输，首先要使用curl_init()方法初始化，再把Authorization信息保存在header头信息数组中。
头信息数组$headers包含两个元素，一个是编码信息，另一个就Authorization信息。Authorization信息包含账号和密码的信息。
使用curl_setopt（）方法设置抓取的url，url由get_data（）函数第一个参数提供 。
再次使用curl_setopt（）方法设置头文件的信息作为数据流输出，并且设置获取的信息以文件流的形式返回，而不是直接输出。
使用curl_setopt（）方法设置传输的header头信息，也就是已经设置了Authorization信息的数组$headers。使用curl_exec（）方法执行命令，执行完命令，使用curl_close（）方法关闭URL请求，至此，完成所有代码的编写。
在实际使用中，只需要调用该函数，并把请求的url，账号和密码（Authorization信息）作为参数传递给函数，即可成功实现认证信息的传递。
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