The gmp_import() function is an inbuilt function in php which imports a GMP number(GNU Multiple Precision: For large numbers) from a binary string.
Syntax:
GMP gmp_import ( string $data, int $word_size, int $options )
Parameters: The gmp_import() function accepts three parameters as mentioned above and described below:
- $data: It is one of the required parameters, contains the binary string which is supposed to be imported.
- $word_size: This is also a parameter of the gmp_import() function. It contains the number of bytes in each chunk of binary data. This parameter is mainly used simultaneously with the options parameter. The default value of this parameter is 1.
- $options: This parameter has default value of GMP_MSW_FIRST | GMP_NATIVE_ENDIAN.
Return Value: The function returns a GMP number on success otherwise returns FALSE on failure.
Below programs illustrate the gmp_import() function in PHP:
Program 1:
<?php // php code implementing gmp_import() // function   $number = gmp_import("\0");   // The gmp_strval() returns the // string value of the gmp number echo gmp_strval($number) . "\n";   ?> |
Output:
0
Program 2:
<?php // php code implementing the // gmp_import() function    $number = gmp_import("\0\1\2");    // The strval() returns the string // value of the gmp number echo gmp_strval($number) . "\n";    ?> |
Output:
258
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Reference: php.net/manual/en/function.gmp-import.php
