How to use php strtr function?

strtr() function is a built-in function in PHP that is used to replace a substring in a string with a given string. This function returns the converted string; if the lengths of the from and to parameters are different, they will be formatted to the shortest length; if the array parameter contains the key name of an empty string, it returns FALSE.

php How to use strtr() function?

strtr() function converts specific characters (or substrings) in a string.

Syntax:

strtr(string,from,to)

or

strtr(string,array)

Parameters:

● string: required. Specifies the string to be converted.

●from: required (unless using an array). Specifies the character (or substring) to be changed.

●　to: required (unless using an array). Specifies the character (or string) to be changed to.

●array: required (unless from and to are used). An array in which the key name is the original character and the key value is the target character.

Return value: Returns the converted string. If the lengths of the from and to parameters are different, they will be formatted to the shortest length; if the array parameter contains an empty string ("") key name, FALSE will be returned.

Let’s take a look at how to use the php strtr() function through an example.

Example 1: Replace the character "ia" in the string with "eo"

<?php
echo strtr("Hilla Warld","ia","eo");
?>

Output:

Hello World

Example 2 ：Replace the string "Hello world" with "Hi earth"

<?php
$arr = array("Hello" => "Hi", "world" => "earth");
echo strtr("Hello world",$arr);
?>

Output:

Hi earth

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