String function in php

echo

<?php
echo " A value is ";
$a=4;
echo $a;
?>


chr

<?php
echo chr(65);
echo "<br/>";
echo chr(122);
?>


strlen

<?php
$pwd="abc@123";
if(strlen($pwd)<6)
{
echo "password to short";
}
?>


ord

<?php
echo ord(' ');
echo "<br/>";
echo ord('z');
?>

print

<?php
print " A value is ";
$a=4;
print $a;
?>

strtoupper

<?php
echo strtoupper('hello');
echo "<br/>";
echo strtoupper('world');
?>

strtolower

<?php
echo strtolower('HEllo');
echo "<br/>";
echo strtolower('WORLD');
?>


substr

<?php
$a="harsukh k k";
$b=strlen($a);
for($i=0;$i<=9;$i++){
$j=substr($a,$i,1);
$d=ord($j);
echo $d;
echo"<br />";
echo $j;
}


?>

chop

<?php
     $str = "Hello World!";
     echo $str . "<br>";
     echo chop($str,"World!");
?>

join

<?php
$arr = array('Hello','World!','Beautiful','Day!');
echo join(" ",$arr);
?>

parse_str

<?php
parse_str("name=Peter&age=43");
echo $name."<br>";
echo $age;
?>