str_split (PHP 5)str_split -- Convert a string to an array 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. 例子 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 )
print_r($array);
$str = 1234;
$str = (string)$str;
for($i=0;$i<strlen($str);$i++){
$ext[] = $str["$i"];
}
$exl = $r[0];
$str = 1234;
$exl = array();
for ($i=0;$i<4;$i++)
{
$exl[$i] = substr($str,$i,1);
}
(PHP 5)str_split -- Convert a string to an array
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. 例子 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
)
$a = 1234;
$s = wordwrap($a, 1, ';', 1);
print_r(explode(';', $s ));
?>
$str[1] = "d";
$str[2] = "s";
$str[3] = "a";似乎没必要做什么