PHP set_include_path() Function

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The set_include_path() function is an inbuilt function in PHP that sets the include_path configuration option.

Syntax:

string|false set_include_path(string $include_path)

Parameters: This function accepts one parameter that is described below:

$include_path: This parameter specifies the new value for the include_path.

Return Value: This function returns the old include_path on successful, otherwise returns “false”.

Example 1: In this example, we will use the set_include_path() function.

PHP

<?php 
    $path = "/home/dachman" ; 
    if(true == set_include_path($path)){ 
        echo "Path is set now" ; 
    } else { 
        echo "Path is not set now" ; 
    } 
?>

Output:

The path is set now

Example 2: In the below code, we will check the path before using the set_include_path() function.

PHP

<?php 
   $path = "/home/dachman" ; 
  
   // Before using set_include_path() function. 
   echo get_include_path()."\n"; 
     
   set_include_path($path) ; 
  
   echo get_include_path() ; 
?>