What is the difference between characters and x?

  •  is an escape character, while x is used for hexadecimal representation in strings
  •  is used for hexadecimal representation in strings, while x is an escape character
  • They represent the same character
  •  is used for special characters, while x is used for regular characters
The character  is an escape character used to indicate special characters in strings, while x is used for hexadecimal representation in strings. They have different purposes in string manipulation. Learn more: http://php.net/manual/en/language.types.string.php
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