PHP str_replace() Function

In this chapter you will learn:

1. Definition for PHP str_replace() Function
2. Syntax for PHP str_replace() Function
3. Parameter for PHP str_replace() Function
4. Return for PHP str_replace() Function
5. Example - how to use str_replace()

Definition

PHP str_replace() Function replace all occurrences of the search string with the replacement string.

Syntax

PHP str_replace() Function has the following syntax.

Parameter

The str_replace() function replaces a string with new strings. str_replace() function takes a minimum of three parameters:

• what to look for,
• what to replace it with, and
• the string to work with.

count If passed, this will be set to the number of replacements performed.

Return

This function returns a string or an array with the replaced values.

Example

str_replace() is case sensitive. case-insensitive version of str_replace() is str_ireplace().

<?PHP//  j a  v a  2s.  co  m
$string = "aaa"; 
$newstring = str_ireplace("A", "b", $string); 
print $newstring; 
?>

When used, the fourth parameter is passed by reference, and PHP will set it to be the number of times your string was found and replaced:

<?PHP/*from  j  a  va  2s . co m*/
$string = "java php from j a v a 2 s . c o m."; 
$newstring = str_replace("java", "php", $string, $count); 
print "$count changes were made.\n"; 
print $newstring;
?>

Next chapter...

What you will learn in the next chapter:

1. Definition for PHP str_rot13() Function
2. Syntax for PHP str_rot13() Function
3. Parameter for PHP str_rot13() Function
4. Return for PHP str_rot13() Function
5. Note for PHP str_rot13() Function
6. Example - Encode and decode a string

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