Как сделать progress bar php ajax через file_get_contents()?

Пользователь

от jerrold_langworth , в категории: PHP , 7 месяцев назад

Как сделать progress bar php ajax через file_get_contents()?

Facebook Vk Ok Twitter LinkedIn Telegram Whatsapp

1 ответ

Пользователь

от alisa.bahringer , 6 месяцев назад

@jerrold_langworth 

To create a progress bar in PHP using Ajax and file_get_contents() function, you can follow the steps below:

  1. Set up the HTML structure with a progress bar container and a button to initiate the process:
1
2
3
4
<div id="progress-bar-container">
    <div id="progress-bar"></div>
</div>
<button id="start-process">Start Process</button>


  1. Add CSS styles to the progress bar container and button:
 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
<style>
#progress-bar-container {
    width: 200px;
    border: 1px solid #ccc;
    padding: 5px;
}

#progress-bar {
    background: #4CAF50;
    height: 20px;
    width: 0;
}

#start-process {
    margin-top: 10px;
}
</style>


  1. Create a JavaScript function to initiate the Ajax request and update the progress bar:
 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
<script>
document.getElementById('start-process').onclick = function() {
    var xhr = new XMLHttpRequest();
    xhr.open('GET', 'process.php', true);
    
    // Update progress bar
    xhr.onreadystatechange = function() {
        if (xhr.readyState === 3 && xhr.status === 200) {
            var totalSize = xhr.getResponseHeader('Content-Length');
            var loadedSize = xhr.responseText.length;
            var progress = Math.round((loadedSize / totalSize) * 100);
            document.getElementById('progress-bar').style.width = progress + '%';
        }
    }

    xhr.send();
}
</script>


  1. Create a PHP file process.php to perform the desired process and output the response:
1
2
3
4
5
6
7
8
<?php
// Start your process here
// Make sure to update the relevant logic according to your requirements

$file = file_get_contents('https://example.com/large_file.txt');

echo $file;
?>


Note: This example assumes that you want to track the progress based on the content length of the response. However, file_get_contents() might not provide real-time progress information. In this case, you may need to use more advanced techniques like curl or server-side scripts to provide actual progress updates.