/* Removes whitespace from beginning and end of a string if * the second parameter is omitted * First parameter must be the string * Second parameter is optional and can include an alternative character or set of characters. */  // Example 1 $string = " Hello world " $trimmedString = trim($string); // Output = 'Hello world',  // Example 2 $string = "babcabcHello worldabbaca" $trimmedString = trim($string, 'abc'); // Output = 'Hello world',

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