What are the potential pitfalls of combining empty() and isset() in a single string in PHP?

Combining empty() and isset() in a single string in PHP can lead to unexpected results because empty() will return true for variables that are not set, which can conflict with the purpose of isset(). To solve this issue, it's better to use isset() to check if a variable is set and then use !empty() to check if it's not empty. 

// Correct way to check if a variable is set and not empty
if (isset($variable) && !empty($variable)) {
    // Do something if the variable is set and not empty
}

Keywords

empty isset string PHP potential pitfalls

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