PHP Strings | String Functions in PHP | Escape Sequence Characters in PHP | PHP String Functions

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PHP Strings | String Functions in PHP | Escape Sequence Characters in PHP | PHP String Functions

Hello friends welcome to this video, in this video we are going to understand strings in PHP. As well we will understand various builtin functions in php for string manipulation. Web Application Development using PHP WBP 22619 WBP Practicals String manipulations in PHP

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PHP Strings

Strings==
Sequence of letters, numbers , special characters which are enclose in single quotation or double quotation.

$demo='This is Demo';

$demo="This is demo";

$a=10;

echo 'The value of a is $a';

The value of a is $a

Escape Sequence characters==
\n
\t
\$
\"
\'
\\
\r

String Manipulation in PHP

1)calculating the length of string

strlen($str);

2)counting number of words

str_word_count($str);

3)Replce text in string

str_replace(search_string,replace_string,input_string);

4)Reverse String

strrev($str);

5)comparing strings

strcmp($str1,$str2)==case sensitive

0==when str1 is less than str2
0==when str1 is greater than str2
0== when both string are equal

It returns some random integer value

strcasecmp()==

== equal to operator

6)finding the position of string

strpos($inputstring,$search_string,$start)

==case sensitive

stripos()

7)converting string to lower case

strtolower($str);

8) converting string to upper case

strtoupper($str);

9)converting first chart of string to lowercase

lcfirst($str);

10)converting first char to uppercase

ucfirst($str);

11)converting first char to upper case for every word in string

ucwords($str)

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