gmp_export
(PHP 5 >= 5.6.1, PHP 7, PHP 8)
gmp_export — Export to a binary string
Descrizione
$num, int $word_size = 1, int $flags = GMP_MSW_FIRST | GMP_NATIVE_ENDIAN): stringExports a GMP number to a binary string. This function can handle arbitrarily large numbers beyond the range of PHP's native integer type, with configurable word size and byte order, similar in spirit to pack().
The sign of the number is ignored; exporting a negative number produces the same result as exporting its absolute value.
Elenco dei parametri
num-
The GMP number to export.
word_size-
The number of bytes per word in the output. The total length of the returned string will be a multiple of this value. Default value:
1. flags-
A bitmask controlling word order and byte order. Word order:
GMP_MSW_FIRST(most significant word first, default) orGMP_LSW_FIRST(least significant word first). Byte order within each word:GMP_NATIVE_ENDIAN(default),GMP_BIG_ENDIAN, orGMP_LITTLE_ENDIAN. Default value:GMP_MSW_FIRST|GMP_NATIVE_ENDIAN.
Valori restituiti
Returns a string containing the binary representation of the GMP number. The string is empty if the number is zero.
Log delle modifiche
| Versione | Descrizione |
|---|---|
| 8.0.0 |
This function no longer returns false on failure.
|
Esempi
Example #1 gmp_export() example
<?php
$number = gmp_init(16705);
echo gmp_export($number) . "\n";
?>Il precedente esempio visualizzerà:
AA
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