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Splitting a string into blocks
Posted: Tue Oct 26, 2004 9:13 am
by mjseaden
Hi
Is there any PHP string function I can use to split a string into blocks of 20 characters? Say for instance I had ********************####################(((((((((((((((;;;;;;;;;;;;;;;;;;;;
This would split the string into blocks of 20 characters and return each in an array?
Many thanks
Mark
Posted: Tue Oct 26, 2004 9:50 am
by mjseaden
OKay - I think chunk_strings does this - however I can't find a function similar to Visual Basic's left() or right() functions, which take X number of characters off the beginning or end of a string. Is there any PHP equivlent (ltrim and rtrim are not the same as these functions)?
Posted: Tue Oct 26, 2004 10:15 am
by hokiecsgrad
There's no function that I know of that will do what you want, but one shouldn't be too hard to write:
Code: Select all
<?php
function splitString( $str, $numChars ) {
$strArray = array();
while ( strlen( $str ) > 0 ) {
array_push( $strArray, substr( $str, 0, $numChars ) );
$str = substr( $str, $numChars );
}
return $strArray;
}
$myArray = array();
$myString = "********************####################(((((((((((((((;;;;;;;;;;;;;;;;;;;; ";
$myArray = splitString( $myString, 20 );
echo "<pre>"; print_r( $myArray ); echo "</pre>";
?>
Posted: Tue Oct 26, 2004 10:16 am
by mjseaden
Thanks very much!
Posted: Tue Oct 26, 2004 10:27 am
by mjseaden
Hi - I can't seem to find them. Where's the PHP equivalent of left() and right() functions to strip X characters from the left or right end of a string?
Many thanks
Mark
Posted: Tue Oct 26, 2004 10:35 am
by timvw
[php_man]substr[/php_man]
would go like
Code: Select all
function splitter($sentence, $length)
{
$parts = array();
while (strlen($sentence) > $length)
{
$parts[] = substr($sentence, 0, $length);
$sentence = substr($sentence, $length);
}
$parts[] = $sentence;
return $parts;
}
Posted: Tue Oct 26, 2004 10:51 am
by mjseaden
timvw,
Could you use this as a left/right end of a string trimming function? This seems like a fairly basic thing to do but I can't seem to find the right function or combination of functions.
Many thanks
Mark
Posted: Tue Oct 26, 2004 10:56 am
by timvw
if i understand well, that is exactly what [php_man]substr[/php_man] does
string substr ( string string, int start [, int length])
substr() returns the portion of string specified by the start and length parameters.