What are String in PHP?
A string is a Collection of characters Putting together. In PHP string can be a collection of numbers or alphabets nor a mixture of number and alphabets.String is Enclosed with in the \” \”.
In PHP string has a wide role to play ,You can work on various way with the string in PHP .
Where the String Stored ?
String Store in variable like $str= \”Name of book\”;
There are various way to deal with string.Some important and useful string function of PHP are give below
/// Assume $str=\"PHP is Simple\";
// How to count the length of string ?
$l=strlen($str);
echo\"Number of charater in Variable string $str are $l\";
//Output:13
//How to convert string into upper case?
$stu=strtoupper(#str);
echo $stu;
//Output:PHP IS SIMPLE
//How to convert string into lower case?
$stl=strtolower(#str);
echo $stl;
//Output:php is simple
//How to Copy string?
$cpy=$str;
echo $cpy;
//Output:PHP is Simple
//How to merge Two string?
$addstr=\"and easy\";
$merge= $str .$addstr;
echo $merge;
// Output:PHP is Simple and easy
// How to reverse a string ?
$a=hello;
$b=strrev($a);
echo $b;
// Output: olleh
// How to Break A string ?
$char=\" \";
$result = strpbrk($str, $char);
echo $result;
// Output: PHP
Note :this function breaks a string from specified charter if found ,it search for the first instance of character in string , in above example it is space .
How to Replace Text Within a String ?
$newstr =str_replace(\"Simple\", \"easy\",$str);
Outputs: PHP is easy;