to get the file

Scalar Type Conversions
• Explicit type conversions in three different ways
• Using cast: (type_name) exp
(Ex) $total = 4.333; (int) $total // 4
• Using function: intval, doubleval, strval
(Ex) $total = 4.333; intval($total) // 4
• Using settype function: settype (variable, type_name)
(Ex) settype($total, "integer") // 4
• The type of a variable can be determined with gettype
or type testing functions
• gettype($total) - returns the type of the current value.
It may return "unknown"
• is_integer($total), is_float(), is_bool(), is_string()
– a predicate function
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