How can error_reporting(E_ALL) help identify issues like undefined variables in PHP scripts?

When error_reporting(E_ALL) is set in PHP scripts, it enables the reporting of all types of errors, including notices for undefined variables. This can help identify issues like uninitialized variables being used in the script, which can lead to unexpected behavior or errors. By enabling this setting, developers can quickly spot and fix these issues before they cause problems in their code. 

error_reporting(E_ALL);
ini_set('display_errors', 1);

// Code snippet that may lead to undefined variable notice
$variable1 = "Hello";
echo $variable2; // This will trigger an undefined variable notice

// Fix the issue by initializing $variable2
$variable2 = "World";
echo $variable2; // Output: World

Keywords

error_reporting E_ALL undefined variables PHP scripts issues

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