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$str = " Hello, World! ";
echo "Original string: '" . $str . "'<br>";
// Removing leading and trailing spaces
$trimmedStr = trim($str);
echo "Trimmed string: '" . $trimmedStr . "'";
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echo trim( "#sajjad###", "#"). "<br>";//sajjad
echo rtrim( "#sajjad###", "#"). "<br>";//#sajjad
echo ltrim( "#sajjad###", "#"). "<br>";//sajjad###
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<?php
$text = "\t\tThese are a few words :) ... ";
$binary = "\x09Example string\x0A";
$hello = "Hello World";
var_dump($text, $binary, $hello);
print "\n";
$trimmed = trim($text);
var_dump($trimmed);
$trimmed = trim($text, " \t.");
var_dump($trimmed);
$trimmed = trim($hello, "Hdle");
var_dump($trimmed);
$trimmed = trim($hello, 'HdWr');
var_dump($trimmed);
// trim the ASCII control characters at the beginning and end of $binary
// (from 0 to 31 inclusive)
$clean = trim($binary, "\x00..\x1F");
var_dump($clean);
?>