How can using quotes around array keys improve code readability and prevent syntax errors in PHP?

Using quotes around array keys in PHP can improve code readability and prevent syntax errors by clearly indicating that the key is a string. This can help avoid confusion and potential errors when working with associative arrays. Additionally, using quotes ensures that special characters or reserved words are properly interpreted as keys. 

// Before using quotes around array keys
$array = [key1 => 'value1', key2 => 'value2'];

// After using quotes around array keys
$array = ['key1' => 'value1', 'key2' => 'value2'];

Keywords

quotes array keys code readability syntax errors PHP

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