What potential issues can arise when trying to output results gradually in PHP?

Potential issues that can arise when trying to output results gradually in PHP include buffering problems, where the output is not sent to the browser until the script finishes executing, causing delays in displaying content. To solve this, you can use the `flush()` function to send the output to the browser immediately. 

// Enable output buffering
ob_start();

// Output content gradually
echo "First part of content";
flush();
// More content
echo "Second part of content";
flush();

// Clear output buffer and turn off buffering
ob_end_flush();

Keywords

buffering output buffering flush ob_flush ob_end_flush

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