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Added Docblocks for cell address and column sort callback functions

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Mark Baker 2013-04-26 07:46:50 +01:00
parent d96364fda6
commit 8a05ee8896
1 changed files with 32 additions and 0 deletions
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32
Classes/PHPExcel/ReferenceHelper.php
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@ -68,14 +68,38 @@ class PHPExcel_ReferenceHelper
protected function __construct() {
}
/**
* Compare two column addresses
* Intended for use as a Callback function for sorting column addresses by column
*
* @param string $a First column to test (e.g. 'AA')
* @param string $b Second column to test (e.g. 'Z')
* @return integer
*/
public static function columnSort($a, $b) {
return strcasecmp(strlen($a) . $a, strlen($b) . $b);
}
/**
* Compare two column addresses
* Intended for use as a Callback function for reverse sorting column addresses by column
*
* @param string $a First column to test (e.g. 'AA')
* @param string $b Second column to test (e.g. 'Z')
* @return integer
*/
public static function columnReverseSort($a, $b) {
return 1 - strcasecmp(strlen($a) . $a, strlen($b) . $b);
}
/**
* Compare two cell addresses
* Intended for use as a Callback function for sorting cell addresses by column and row
*
* @param string $a First cell to test (e.g. 'AA1')
* @param string $b Second cell to test (e.g. 'Z1')
* @return integer
*/
public static function cellSort($a, $b) {
list($ac,$ar) = sscanf($a,'%[A-Z]%d');
list($bc,$br) = sscanf($b,'%[A-Z]%d');
@ -86,6 +110,14 @@ class PHPExcel_ReferenceHelper
return ($ar < $br) ? -1 : 1;
}
/**
* Compare two cell addresses
* Intended for use as a Callback function for sorting cell addresses by column and row
*
* @param string $a First cell to test (e.g. 'AA1')
* @param string $b Second cell to test (e.g. 'Z1')
* @return integer
*/
public static function cellReverseSort($a, $b) {
list($ac,$ar) = sscanf($a,'%[A-Z]%d');
list($bc,$br) = sscanf($b,'%[A-Z]%d');