PHP Basic Tutorial

PHP Advanced Tutorial

PHP & MySQL

PHP Reference Manual

PHP CURL Functions PHP OpenSSL Functions

PHP substr() Function Usage and Example

　　PHP String Character String Functions Manual

　　 The substr() function is used to return a substring of the string.

Syntax

string substr ( string $string, int $start [, int $length ] )

Definition and Usage

　Returns a substring of the string string specified by the start and length parameters.

Return Value

It returns a part of the string

Parameter

Serial Number	Parameters and Description
1	string Required. Specifies the input string. It must have at least one character.
2	start Required. It specifies where to start in the string. Positive - Start at the specified position in the string Negative - Start at the specified position from the end of the string 0 - Start at the first character in the string
3	length It specifies the length of the string to be returned. The default is to the end of the string. Positive - Return from the position of the start parameter Negative - Return from the end of the string

Online Example

Try the following example, returning "Krishna" from the string:

Example

<?php
　　　//Returns "Krishna" from the string
　　　echo substr("Sairam Krishna",6).'<br>';
　　　
　　　//Using the start parameter with different positive and negative numbers:
　　　echo substr("abcdef",　0,　-1).'<br>';　//　Returns "abcde"
　　　echo substr("abcdef",　2,　-1).'<br>';　//　Returns "cde"
　　　echo substr("abcdef",　4,　-4).'<br>';　//　Returns ""
　　　echo substr("abcdef",　-3,　-1);　//　Returns "de"　　　
?>

Test and see‹/›

Output Result

Krishna
abcde
cde
de

PHP String Character String Functions Manual

PHP CURL Functions PHP OpenSSL Functions