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# gmp_scan0

(PHP 4 >= 4.0.4, PHP 5)

gmp_scan0 -- Scan for 0

## Description

int gmp_scan0 ( resource a, int start )

Scans `a`, starting with bit `start`, towards more significant bits, until the first clear bit is found. Returns the index of the found bit. The index starts from 0.

Exemplo 1. gmp_scan0() example
`<?php // "0" bit is found at position 3. index starts at 0 $s1 = gmp_init("10111", 2); echo gmp_scan0($s1, 0) . "\n"; // "0" bit is found at position 7. index starts at 5 $s2 = gmp_init("101110000", 2); echo gmp_scan0($s2, 5) . "\n"; ?>`
The printout of the above program will be:
    3
    7

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