PHP TutorialLesson 11Free preview

PHP Casting

This lesson is part of PHP · All levels

Summary

Casting is a method of manually changing the data type of a value by writing the target type in front of the value, for example (int) or (string). This lesson describes the casting results from text to numbers, including cases where some characters are successfully read. Casting is useful, but it doesn't replace data validation.

Key points

Casting is written with type in square brackets, example (int) $value
(int) "42abc" makes 42 because the number section reads
(int) "abc" makes 0 because there's no number at the beginning
Casting is temporary and does not change the original type of variable

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