PHP Basic- Part 5 and PHP String

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Welcome to PHP Basic- Part 5 and PHP String.

PHP 5 Strings
A string is a sequence of characters, like "Hello world!".
PHP String Functions
In this chapter we will look at some commonly used functions to manipulate strings.
Get The Length of a String
The PHP strlen() function returns the length of a string.
The example below returns the length of the string "Hello world!":
The output of the code above will be: 12.


Count The Number of Words in a String
The PHP str_word_count() function counts the number of words in a string:
The output of the code above will be: 2.
Example


Reverse a String
The PHP strrev() function reverses a string:
The output of the code above will be: !dlrow olleH.
Example


Search For a Specific Text Within a String
The PHP strpos() function searches for a specific text within a string.
If a match is found, the function returns the character position of the first match. If no match is found, it will return FALSE.
The output of the code above will be: 6.
Tip: The first character position in a string is 0 (not 1).
The example below searches for the text "world" in the string "Hello world!":

Replace Text Within a String
The PHP str_replace() function replaces some characters with some other characters in a string.
The output of the code above will be: Hello Dolly!
The example below replaces the text "world" with "Dolly":


Complete PHP String Reference
For a complete reference of all string functions, go to our complete PHP String Reference.
The PHP string reference contains description and example of use, for each function!
PHP 5 String Functions under below:

The PHP string functions are part of the PHP core. No installation is required to use these functions.

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