PHP Data type and judgment variable type

PHP Data types include string, integer, floating point number, Boolean, array, object, and NULL. Use the var_dump function to determine the variable type. The var_dump function is used to determine the type and length of a variable and output the value of the variable. if the variable has a value, it is the value of the variable and returns the data type. PHP Data types include string, integer, floating point number, Boolean, array, object, and NULL.

Use the var_dump function to determine the variable type.
The var_dump function is used to determine the type and length of a variable and output the value of the variable. if the variable has a value, it is the value of the variable and returns the data type.

Java code

$ Val1 = 1;

$ Val2 = 3.14;

$ Val3 = 'Who Asked You. ';

$ Val4 = array ('AAA', 'BBB ');

$ Val5 = true;

$ Val6 = function (){};

$ Val7 = null;

Var_dump ($ val1); // integer

Echo'
';

Var_dump ($ val2); // floating point number

Echo'
';

Var_dump ($ val3); // string

Echo'
';

Var_dump ($ val4); // Array

Echo'
';

Var_dump ($ val5); // boolean

Echo'
';

Var_dump ($ val6); // object

Echo'
';

Var_dump ($ val7); // NULL

?>

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PS: Since the encoding used is UTF-8, a Chinese character occupies 3 bytes while an English character occupies 1 byte.