PHP ob_get_level() Function - Coding

The ob_get_level() function is an inbuilt function in PHP that is used to get the current output buffer level in a nested level. Output buffering is a feature in PHP that allows you to capture and manipulate output before it is sent to the browser or client.

Syntax

ob_get_level(): int

Parameter

This function does not accept any parameters.

Return Values

The ob_get_level() function returns an integer value that represents the current value of the output buffering.

Program 1: The following program demonstrates the ob_get_level() Function.

PHP

<?php 
ob_start(); 
  
$bufferingLevel = ob_get_level(); 
  
// Output some content 
echo "This is content inside the buffer."; 
  
// Start a new output buffer 
ob_start(); 
  
// Get the new output buffering level 
$bufferingLevelNew = ob_get_level(); 
  
// Output more content inside the new buffer 
echo "This is content inside the new buffer."; 
  
// End the new buffer 
ob_end_flush(); 
  
// Check the output buffering level 
// after ending the new buffer 
$bufferingLevelAfterEnd = ob_get_level(); 
  
// End the original buffer 
ob_end_flush(); 
?>

Output:

This is content inside the buffer.This is content inside the new buffer.

Program 2: The following program demonstrates the ob_get_level() Function.

PHP

<?php 
// Start output buffering 
ob_start(); 
  
// Function to check output buffering level 
// and perform actions accordingly 
function checkOutputBufferLevel() 
{ 
    $bufferingLevel = ob_get_level(); 
  
    // Display the output buffering level 
    echo "Output buffering level: " . $bufferingLevel . "<br>"; 
  
    // Perform actions based on the output buffering level 
    if ($bufferingLevel === 1) { 
        echo "You are in the top-level buffer.<br>"; 
    } elseif ($bufferingLevel > 1) { 
        echo "You are in a nested buffer.<br>"; 
    } else { 
        echo "Output buffering is not active.<br>"; 
    } 
} 
  
checkOutputBufferLevel(); 
  
echo "This is content inside the buffer.<br>"; 
  
ob_end_flush(); 
?>

Output:

Output buffering level: 1
You are in the top-level buffer.
This is content inside the buffer.

Reference: https://www.php.net/manual/en/function.ob-get-level.php

Reffered: https://www.geeksforgeeks.org

PHP

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Category:	Coding
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