How does the usage of "@" in PHP differ between expressions and control structures like foreach, and what are the implications for error handling?

When using "@" in PHP before an expression, it suppresses any error messages that would normally be displayed. However, when used before a control structure like foreach, it only suppresses errors within the loop, not the initialization of the loop. This can lead to unexpected behavior if errors occur during initialization. To handle errors effectively, it's best to avoid using "@" and instead implement proper error handling with try-catch blocks. 

try {
    foreach($array as $item) {
        // code that may throw an error
    }
} catch (Exception $e) {
    // handle the error here
}

Keywords

PHP error handling "@" operator expressions control structures

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