How php converts strings to integer types

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Conversion methods: 1, the use of intval () function, syntax "intval ($str)"; 2, in the string variable before the target type enclosed in parentheses to cast variable type "(integer)", syntax "(integer) $str".

Operating environment of this tutorial: windows7 system, PHP7.1 version, DELL G3 computer

Php converts strings to integer types

Method 1: use the intval () function

Intval (): used to get the integer value of a variable

Example:

Output result:

Method 2: cast the variable type "(integer)" by adding the target type enclosed in parentheses before the string variable

(integer): string variables can be converted to integers

Example:

Output result:

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