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PHP Manual :: Variable handling Functions



Predefined Constants || boolval || Variable handling || PHP Manual

  • boolval — Get the boolean value of a variable
  • debug_zval_dump — Dumps a string representation of an internal zend value to output
  • doubleval — Alias of floatval
  • empty — Determine whether a variable is empty
  • floatval — Get float value of a variable
  • get_defined_vars — Returns an array of all defined variables
  • get_resource_type — Returns the resource type
  • gettype — Get the type of a variable
  • import_request_variables — Import GET/POST/Cookie variables into the global scope
  • intval — Get the integer value of a variable
  • is_array — Finds whether a variable is an array
  • is_bool — Finds out whether a variable is a boolean
  • is_callable — Verify that the contents of a variable can be called as a function
  • is_double — Alias of is_float
  • is_float — Finds whether the type of a variable is float
  • is_int — Find whether the type of a variable is integer
  • is_integer — Alias of is_int
  • is_long — Alias of is_int
  • is_null — Finds whether a variable is NULL
  • is_numeric — Finds whether a variable is a number or a numeric string
  • is_object — Finds whether a variable is an object
  • is_real — Alias of is_float
  • is_resource — Finds whether a variable is a resource
  • is_scalar — Finds whether a variable is a scalar
  • is_string — Find whether the type of a variable is string
  • isset — Determine if a variable is set and is not NULL
  • print_r — Prints human-readable information about a variable
  • serialize — Generates a storable representation of a value
  • settype — Set the type of a variable
  • strval — Get string value of a variable
  • unserialize — Creates a PHP value from a stored representation
  • unset — Unset a given variable
  • var_dump — Dumps information about a variable
  • var_export — Outputs or returns a parsable string representation of a variable


Predefined Constants || boolval || Variable handling || PHP Manual
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