How to determine the data type of a variable in php

王林
Release: 2023-02-24 15:46:01
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How to determine the data type of a variable in php

In PHP, data types include: Boolean, Integer, Float, String, Array, Object, Resource type, NULL; know A data type that can perform code logic processing more efficiently.

1. Use the var_dump() function to obtain detailed information about any data, including its data type

How to determine the data type of a variable in php

2. Use the function is_bool() to determine whether the data is [Boolean type]

How to determine the data type of a variable in php

3. Use the function is_int() to determine whether the data is [Integer] Integer type】

How to determine the data type of a variable in php

4. Use the function is_float() to determine whether the data is [Float floating point type]

How to determine the data type of a variable in php

5. Use the function is_string() to determine whether the data is [String string]

How to determine the data type of a variable in php

6 . Use the function is_array() to determine whether the data is an [Array array]

How to determine the data type of a variable in php

7. Use the function is_object() to determine whether the data is an [Object object]

How to determine the data type of a variable in php

8. Use the function is_resource() to determine whether the data is [Resource resource type]

How to determine the data type of a variable in php

9. Use the function is_null() to determine whether the data is [NULL]

How to determine the data type of a variable in php

10. Judgment related to numeric types You can also use is_numeric(), ctype_digit()

How to determine the data type of a variable in php

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