ListAppend is a rather simple utility function, however when you are dealing with lists, it can prove a great ally. This is a function that I pulled out of a class of list functions. I will publish the entire class once I get the individual functions published. The default delimiter for the ListAppend function is a ','. The delimiter length should be 1 character. Regardless of the size of the delimiter, the function will only use the first character.
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| The Function: |
<php
function ListAppend($list,$value,$delimiter= ",")
{
$delimiter = substr($delimiter,1);
$nList = $list . $delimiter . $value;
return $nList;
}
?>
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| Usage: |
| Statement | Output | Comment | | ListAppend('elem1,elem2', '' ) | elem1,elem2, | Appended element is empty; delimiter is last character in list; list length is 2. | | ListAppend('', 'elem1,elem2' ) | elem1,elem2 | List length is 2. | | ListAppend("one___two", "three", "___") | "one___two_three" | Inserted the first character of delimiters before "three." |
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ListAppend works great to add values to a list. This function will default to a ',' for a delimiter!
For Example:
<?php
$list = "abcd";
$value = "Z";
echo ListAppend($list,$value);
?>
The results is 'abcd,Z'!
By sending the correct delimiter through, in this case '': <?php
$list = "abcd";
$value = "Z" ;
echo ListAppend($list,$value,"");
?>
The results is 'abcdZ'!
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