A problem that has plagued web developers for years is how to add real-time information to their applications, such a progress bar for file uploads. Users are impatient; they don’t want to sit and wait while the browser is doing something and wonder whether it has frozen or if they have a slow connection. Providing a progress indicator gives users useful information and lets them know exactly what’s going on. Learn how a new feature in PHP 5.4 can be used to create a dynamic upload progress bar without any external libraries or browser dependencies.
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