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John Smith
John Smith

Reputation: 23

php splitting large numbers (like explode)

i need the functionality of php explode(), but without the separators.

for example, turning the variable "12345" into an array, holding each number seperately.

is this possible? i've already googled but only found explode(), which doesn't seem to work.

thanks!

Upvotes: 2

Views: 4117

Answers (3)

user557846
user557846

Reputation:

with any string in php:

$foo="12345";
echo $foo[0];//1
echo $foo[1];//2
//etc

or (from the preg_split()) page in the manual

$str = 'string';
$chars = preg_split('//', $str, -1, PREG_SPLIT_NO_EMPTY);
print_r($chars);

EVEN BETTER:

$str = 'string';
$chars=str_split($str, 1)
print_r($chars);

benchmark of preg_split() vs str_split()

 function microtime_float()
{
    list($usec, $sec) = explode(" ", microtime());
    return ((float)$usec + (float)$sec);
}


$str = '12345';
$time_start = microtime_float();
for ($i = 0; $i <100000; $i++) {
$chars = preg_split('//', $str, -1, PREG_SPLIT_NO_EMPTY);
//$chars=str_split($str, 1);
}
$time_end = microtime_float();
$time = $time_end - $time_start;

echo "$time seconds\n";

results:

str_split  =0.69
preg_split =0.9

Upvotes: 7

Dan
Dan

Reputation: 57961

Your number can be turned into string and then acted like an array

$i = 2342355; $i=(string)$i;
//or
$i='234523452435234523452452452';

//then

$i[2]==4

//numeration started from 0

Upvotes: 1

John Cartwright
John Cartwright

Reputation: 5084

If you actually want to create an array, then use str_split(), i.e.,

echo '<pre>'. print_r(str_split("123456", 1), true) .'</pre>';

would result in

Array
(
    [0] => 1
    [1] => 2
    [2] => 3
    [3] => 4
    [4] => 5
)

Upvotes: 4

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