PHP uses curl to download Excel files after logging in to the website

 PHP utilize curl To realize the login , preservation cookie To the file

<?php

header("Content-Type:text/html;charset=utf-8");

$curl = curl_init();
//$cookie_jar = tempnam('./tmp','cookie'); //tempnam-- Create a file with a unique filename 
curl_setopt($curl, CURLOPT_URL,'https://www.baidu.com');// Write the login processing interface here 
curl_setopt($curl, CURLOPT_POST, 1); //post Submit data 
curl_setopt($curl, CURLOPT_SSL_VERIFYPEER , 0); //post Submit data 
curl_setopt($curl, CURLOPT_SSL_VERIFYHOST , 0); //post Submit data 
$request = 'name=****&password=*****';
curl_setopt($curl, CURLOPT_POSTFIELDS, $request);// To transfer data 
curl_setopt($curl, CURLOPT_COOKIEJAR, "a.txt");// Bring back cookie The information is kept in $cookie_jar In file 
curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);// Set whether the returned data is automatically displayed 
curl_setopt($curl, CURLOPT_HEADER, false);// Set whether to display header information 
curl_setopt($curl, CURLOPT_NOBODY, false);// Set whether to output page content 
curl_exec($curl);// Return results 
if(curl_exec($curl) === false)
{
    echo 'Curl error: ' . curl_error($curl);
}
else
{
    echo ' The operation is completed without any errors ';
}

curl_close($curl); // close */

PHP utilize cookie File implementation requires login get download EXcel

<?php
header("Content-Type:text/html;charset=utf-8");
$cookie_jar = dirname(__FILE__) . "/a.txt"; // The saved cookie Information file path 
$url = "https://www.baidu.com/filepath";
$arr = curl_get($url, $cookie_jar);


/**
 *curl post request 
 */
function curl_post($url, $data, $cookie_jar)
{
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_POST, 1);
    curl_setopt($ch, CURLOPT_HEADER, 0);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($ch, CURLOPT_COOKIEFILE, $cookie_jar);
    curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
    $return = curl_exec($ch);
    curl_close($ch);
}

/**
 *curl get request 
 */
function curl_get($url, $cookie_jar)
{
    $curl2 = curl_init();
    curl_setopt($curl2, CURLOPT_URL, $url);// Which page to get information from after logging in 
    curl_setopt($curl2, CURLOPT_HEADER, false);
    curl_setopt($curl2, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($curl2, CURLOPT_SSL_VERIFYPEER , 0); //post Submit data 
    curl_setopt($curl2, CURLOPT_SSL_VERIFYHOST , 0); //post Submit data 
    curl_setopt($curl2, CURLOPT_COOKIEFILE, $cookie_jar);
    $content = curl_exec($curl2);
    file_put_contents("a.xlsx", $content);
    if(curl_exec($curl2) === false)
    {
        echo 'Curl error: ' . curl_error($curl2);
    }
    else
    {
        echo ' The operation is completed without any errors ';
    }
    curl_close($curl2);

}