PHP String Functions

PHP String Functions 

PHP String Functions :

1.      Strlen(string) :  used to find length of a string.

2.      Str-replace(): used to replace a part of a string with another string and is case sensitive.

Str-replace(what string, new string, source string[,no of replacements occure]);

3.      Str-ireplace() : case – in –sensitive search and replace using array of strings.

Str-ireplace(find,replace,source string,count)

4.      Trim() : function used for removing empty space from both sides of a string.

Trim(string)

Ltrim(string)

Rtrim(string)

5.      Strrev(string) : function used for reversing a string.

6.      Adding two or more strings in php.    .       .=

<?php

$str = "india tech";

echo "size=".  strlen($str)."<br>";

$str ="Html is used for designing a webpage ,html is a part of webpage";

$str1 = str_replace("HTML","PHP" ,$str, $c);

echo $str1."<br>";

echo "no of replacements=".$c."<br>";

$str = "india tech";

$str1 = trim($str);

echo $str1."--".  strlen($str1)."<br>";

echo strrev($str)."<br>";

$a = 11;

$b=22;

$c=$a.$b;

echo $c."<br>";

?>

OutPut:

size=10

Html is used for designing a webpage ,html is a part of webpage

no of replacements=0

india tech--10

hcet aidni

1122

7.      Strstr() : searching for the first occurance of a string inside another string ; case sensitive search.

8.      Stristr() :  searching for the first occurance of a string inside another string ; Case insensitive search.

Stristr(sourcestring, search string);

9.      nl2br(string) :  function used to add line break(<br>) inside a string in place of carriage returns(\n , \r)[new line break]

10.  str_split() : function used for breaking a string to form array.

Str_split(string[,length]);

Where the length arguments is optional that specifies the length of each array element .

Default is  / .

<?php

$str = "india is my country";

$search = strstr($str,"is");

echo $search."<br>";

$str = "india\n technologies\r private\n";

echo nl2br($str)."<br><br>";

$str = "indian Technologies";

$data = str_split($str);

print_r($data);

echo "<br><br>";

$data = str_split($str,3);

print_r($data);

?>

OutPut :

is my country

india

technologies

private

Array ( [0] => i [1] => n [2] => d [3] => i [4] => a [5] => n [6] => [7] => T [8] => e [9] => c [10] => h [11] => n [12] => o [13] => l [14] => o [15] => g [16] => i [17] => e [18] => s )

Array ( [0] => ind [1] => ian [2] => Te [3] => chn [4] => olo [5] => gie [6] => s )