note 107440 added to function.range
| From: | dries at volta dot be | Date: | Thu, 09 Feb 2012 11:30:31 +0000 |
| Subject: | note 107440 added to function.range | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-185935@lists.php.net to get a copy of this message | ||
Ever wanted to generate an array with a range of column names for use in Excel file related parsing?
I've wrote a function that starts at the A column and adds column names up until the column you
specified.
<?php
/**
* This function creates an array with column names up until the column
* you specified.
*/
function createColumnsArray($end_column, $first_letters = '')
{
$columns = array();
$length = strlen($end_column);
$letters = range('A', 'Z');
// Iterate over 26 letters.
foreach ($letters as $letter) {
// Paste the $first_letters before the next.
$column = $first_letters . $letter;
// Add the column to the final array.
$columns[] = $column;
// If it was the end column that was added, return the columns.
if ($column == $end_column)
return $columns;
}
// Add the column children.
foreach ($columns as $column) {
// Don't itterate if the $end_column was already set in a previous itteration.
// Stop iterating if you've reached the maximum character length.
if (!in_array($end_column, $columns) && strlen($column) < $length) {
$new_columns = createColumnsArray($end_column, $column);
// Merge the new columns which were created with the final columns array.
$columns = array_merge($columns, $new_columns);
}
}
return $columns;
}
?>
Usage:
<?php
// Return an array with all column names from A until and with BI.
createColumnsArray('BI');
?>
----
Server IP: 194.50.97.14
Probable Submitter: 194.78.7.202
----
Manual Page -- http://www.php.net/manual/en/function.range.php
Edit -- https://master.php.net/note/edit/107440
Del: integrated -- https://master.php.net/note/delete/107440/integrated
Del: useless -- https://master.php.net/note/delete/107440/useless
Del: bad code -- https://master.php.net/note/delete/107440/bad+code
Del: spam -- https://master.php.net/note/delete/107440/spam
Del: non-english -- https://master.php.net/note/delete/107440/non-english
Del: in docs -- https://master.php.net/note/delete/107440/in+docs
Del: other reasons-- https://master.php.net/note/delete/107440
Reject -- https://master.php.net/note/reject/107440
Search -- https://master.php.net/manage/user-notes.php