The function treats '_' as after letters and numbers when it would be placed before logically.
(PHP 4, PHP 5, PHP 7, PHP 8)
strnatcasecmp — Comparação de strings sem diferenciar maiúsculas/minúsculas usando o algoritmo "natural order"
$str1, string $str2): intEsta função implementa um algoritmo de comparação de strings alfanumérico do jeito que um ser humano faz. Esta função é similar a strnatcmp(), com a exeção que a comparação não diferencia maiúsculas/minúsculas. Para maiores informações veja: Martin Pool's » Natural Order String Comparison.
Similar a outras funções de comparação de string, esta aqui retorna
< 0 se str1 é menor do que
str2; > 0 se
str1 é maior do que
str2, e 0 se forem iguais.
Veja também ereg(), strcasecmp(), substr(), stristr(), strcmp(), strncmp(), strncasecmp(), strnatcmp(), e strstr().
The function treats '_' as after letters and numbers when it would be placed before logically.Use strnatcmp to avoid the _ problem as mentioned below;
<< The function treats '_' as after letters and numbers when it would be placed before logically. >>There seems to be a bug in the localization for strnatcmp and strnatcasecmp. I searched the reported bugs and found a few entries which were up to four years old (but the problem still exists when using swedish characters).
These functions might work instead.
<?php
function _strnatcasecmp($left, $right) {
return _strnatcmp(strtolower($left), strtolower($right));
}
function _strnatcmp($left, $right) {
while((strlen($left) > 0) && (strlen($right) > 0)) {
if(preg_match('/^([^0-9]*)([0-9].*)$/Us', $left, $lMatch)) {
$lTest = $lMatch[1];
$left = $lMatch[2];
} else {
$lTest = $left;
$left = '';
}
if(preg_match('/^([^0-9]*)([0-9].*)$/Us', $right, $rMatch)) {
$rTest = $rMatch[1];
$right = $rMatch[2];
} else {
$rTest = $right;
$right = '';
}
$test = strcmp($lTest, $rTest);
if($test != 0) {
return $test;
}
if(preg_match('/^([0-9]+)([^0-9].*)?$/Us', $left, $lMatch)) {
$lTest = intval($lMatch[1]);
$left = $lMatch[2];
} else {
$lTest = 0;
}
if(preg_match('/^([0-9]+)([^0-9].*)?$/Us', $right, $rMatch)) {
$rTest = intval($rMatch[1]);
$right = $rMatch[2];
} else {
$rTest = 0;
}
$test = $lTest - $rTest;
if($test != 0) {
return $test;
}
}
return strcmp($left, $right);
}
?>
The code is not optimized. It was just made to solve my problem.