note 19548 added to function.substr
| From: | jorgenj at stud dot ntnu dot no | Date: | Sat, 02 Mar 2002 23:42:46 +0000 |
| Subject: | note 19548 added to function.substr | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-27286@lists.php.net to get a copy of this message | ||
I wanted to split a string with certain intervals, but not in the middle of a word. This was the
method I came up with:
<?php
// Starts at $i and goes back until it encounters a space:
function findSpace($string,$i){
while($i>0) {
if($string{$i} == " ")break;
else $i--;
};
return $i;
};
// Then this code splits $yourstring:
$start = 0;
$n = 0;
while(void){
$diff = strlen($yourstring)-$start;
if($diff<40){
$part[$n] = substr($yourstring,$start,$diff);
break;
};
$stop = findSpace($yourstring,$start+40);
$length = $stop-$start;
$part[$n] = substr($yourstring,$start,$length);
$start = $stop;
$n++;
};
?>
Now the different parts of the string is stored in the array $part. The number 40 is the maximum of
characters in each part. You can also put the code for splitting in a function if you need to split
many strings, but then $part needs to be assigned first outside the function, and then again as
global inside the function.
--
http://www.php.net/manual/en/function.substr.php
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