Which PHP function checks if a variable is a number or a numeric string?

  • is_numeric()
  • is_integer()
  • is_float()
  • is_string()
The is_numeric() function in PHP is used to check if a variable is a number or a numeric string. It returns true if the variable can be evaluated as a number, whether it is an integer or a float, or a numeric string. This function is useful when you need to validate the numeric nature of a variable. Learn more: https://www.php.net/manual/en/function.is-numeric.php
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