What are common issues with ob_start(), ob_flush(), and output buffering in PHP scripts?

Common issues with ob_start(), ob_flush(), and output buffering in PHP scripts include not properly handling nested output buffering, causing unexpected output or errors. To solve this, make sure to check if output buffering is already active before starting a new buffer, and properly flush and end the buffer when necessary. 

// Check if output buffering is already active before starting a new buffer
if (ob_get_level() == 0) {
    ob_start();
}

// Your PHP code here

// Flush and end the buffer when necessary
ob_end_flush();

Keywords

ob_start ob_flush output buffering PHP scripts errors

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