PHP: str_split

Description

array str_split ( string string [, int split_length] )

Converts a string to an array. If the optional split_length parameter is specified, the returned array will be broken down into chunks with each being split_length in length, otherwise each chunk will be one character in length.

FALSE is returned if split_length is less than 1. If the split_length length exceeds the length of string, the entire string is returned as the first (and only) array element.

Example 1. Example uses of str_split()

<?php $str = "Hello Friend"; $arr1 = str_split($str); $arr2 = str_split($str, 3); print_r($arr1); print_r($arr2); ?>
Output may look like:
Array ( [0] => H [1] => e [2] => l [3] => l [4] => o [5] => [6] => F [7] => r [8] => i [9] => e [10] => n [11] => d ) Array ( [0] => Hel [1] => lo [2] => Fri [3] => end )

Example 2. Examples related to str_split()

<?php $str = "Hello Friend"; echo $str{0}; // H echo $str{8}; // i // Creates: array('H','e','l','l','o',' ','F','r','i','e','n','d') $arr1 = preg_split('//', $str, -1, PREG_SPLIT_NO_EMPTY); ?>

User Contributed Notes
str_split

shugotenshi at gmail dot com
19-Apr-2005 09:58


It's best not to overcomplicate things with redundant PHP-side loops and start taking into consideration of preg_split() to simulate str_split()'s behavior for < PHP 5 versions. http://www.php.net/preg-split has an example of how to split strings by one character, but with a little regex knowledge you can easily use a quantifier to split by as many characters as you want.

Sdb at hl2-bg dot net
22-Mar-2005 06:25


I made a simulation of that function:



function myStringSplit($string, $long){



    $long--;

    // Converting the string into an array

    For( $i=0; isset($string{$i}); $i++){

        $myarray[] = $string{$i};

    }



    // Making arrays from the array

    $a=0;

    $end = $long;

    $iend = count($myarray) / ( $long + 1 );

    For( $i=0; $i<$iend; $i++){



        For( ; $a<=$end; $a++){



            $array[$i] = $array[$i].$myarray[$a];

        }

        $end = $end + $long + 1;

    }

    

    return $array;

}



$test = "123456789";

$splited = myStringSplit2($test, '3');

print_r($splited);



Should return this: 

Array ( 

[0] => 123 

[1] => 456 

[2] => 789 

) 



btw: It's mixed-up but it works :)

kelsey_requiem
08-Mar-2005 11:09


As this function is only available in php5, I had problems with it's availability, so i had to write my own. Here's the code:



<?php

function stringsplit($the_string, $the_number)

{

    $startoff_nr = 0;

    $the_output_array = array();

    for($z = 1; $z < ceil(strlen($the_string)/$the_number)+1 ; $z++)

    {    

        $startoff_nr = ($the_number*$z)-$the_number;

        $the_output_array[] = substr($the_string, $startoff_nr, $the_number);

    }

    return($the_output_array);

}



$string = "so long and thanks for all the fish!";

$foo = stringsplit($string, 6);



print($foo);

?>



and this will output:



Array

(

    [0] => so lon

    [1] => g and 

    [2] => thanks

    [3] =>  for a

    [4] => ll the

    [5] =>  fish!

)



what is exactly the same as str_split() 's output. hope this solves someones problems.

lamtd at hotmail dot com
07-Mar-2005 06:20


The code from the post below is actually broken, a working version would be:



<?

function strsplit($str)

{

   if (!preg_match_all("/./", $str, $split))

   {

       return false;

   }

   return $split[0];

}

?>



i.e. use preg_match_all() instead of preg_match(). At least it worked for me.

aidan at php dot net
20-May-2004 11:53


This functionality is now implemented in the PEAR package PHP_Compat.



More information about using this function without upgrading your version of PHP can be found on the below link:



http://pear.php.net/package/PHP_Compat