str_replace() function in PHP

str_replace() function is used to replace one string with another string.

Note - This function is case sensitive.

Syntax

str_replace(find, replace, str, count)

Parameters

• find - The value to search for

• replace - The string we want to replace $find with

• str - The string we want to search for

• count - Number of replacements

Return

str_replace() function returns a string or array with replacement values.

Example

The following is an example-

Real-time demonstration

<?php
$str = "I am Amit";
$res = str_replace("Amit", "David", $str);
echo $res;
?>

Output

I am David

Example

The following is an example -

Live demonstration

<?php
$myArr = array("one","two","three");
print_r(str_replace("three","four",$myArr,$c));
echo "<br>" . "Number of Replacements = $c";
?>

Output

Array (
   [0] => one
   [1] => two
   [2] => four
)
<br> Number of Replacements = 1

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