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strtoupper.php
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strtoupper.php
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<?php
function ft_strlen($str)
{
$tmp = "";
$i = 0;
while ($tmp != $str) {
$tmp.=$str[$i];
$i++;
}
return $i;
}
function ft_strpos($str,$needle)
{
$i = 0;
$j = 0;
$flag = false;
if(ft_strlen($needle) == 1)
{
$flag = true;
}
while ($i < ft_strlen($str)) {
if($flag)
{
if($str[$i] == $needle)
return $i;
}
else
{
$j = 0;
if($str[$i] == $needle[$j])
{
while ($j < ft_strlen($needle)) {
if($str[$i+$j] == $needle[$j])
{
$j++;
}
else
{
break;
}
}
}
if(ft_strlen($needle) == $j)
return $i;
}
$i++;
}
return false;
}
function ft_strtoupper($str)
{
$count = 0;
$lower = "abcdefghijklmnopqrstuvwxyz";
$upper = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
$letter = "";
while ($count < ft_strlen($str)) {
if(ft_strpos($lower,$str[$count]) !== false)
{
$letter = ft_strpos($lower,$str[$count]);
$str[$count] = $upper[$letter];
}
$count++;
}
return $str;
}
?>