Trim and Case

trim, strtoupper, and strtolower prepare text for display or comparison.

trim_and_case.php

<?php
$raw = ;
$trimmed = trim($raw);
$upper = strtoupper($trimmed);
$lower = strtolower($trimmed);

echo "trimmed=" . $trimmed . "\n";
echo "upper=" . $upper . "\n";
echo "lower=" . $lower . "\n";

<?php
$raw = ;
$trimmed = trim($raw);
$upper = strtoupper($trimmed);
$lower = strtolower($trimmed);

echo "trimmed=" . $trimmed . "\n";
echo "upper=" . $upper . "\n";
echo "lower=" . $lower . "\n";

<?php
$raw = ;
$trimmed = trim($raw);
$upper = strtoupper($trimmed);
$lower = strtolower($trimmed);

echo "trimmed=" . $trimmed . "\n";
echo "upper=" . $upper . "\n";
echo "lower=" . $lower . "\n";

normalization Text normalization changes formatting details such as whitespace or letter case.