How can the error "Call to undefined function highlight()" be resolved in the given code?

The error "Call to undefined function highlight()" occurs when the function "highlight()" is not defined or included in the code. To resolve this error, you need to include the PHP standard library file "standard.php" which contains the definition of the "highlight()" function. This can be done by using the "require_once" or "include_once" function to include the necessary file before calling the "highlight()" function. 

// Include the standard.php file which contains the definition of the highlight() function
require_once 'standard.php';

// Call the highlight() function
highlight('This is a highlighted text.');

Keywords

PHP function highlight undefined error

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