How to find the Index of Substring in PHP - Step by Step Examples

How to find the Index of Substring in PHP ?

To find the index of a substring in PHP, you can use the strpos function.

In this example,

We create a string named $str with a string value.
We use the strpos function to find the index of a specific substring within $str.
The strpos function returns the starting index of the substring in the string.
Finally, we echo the index.

<?php
$str = "Hello World";
$index = strpos($str, "World");
echo "Index of substring is: $index";
?>

Index of substring is: 6

In this example,

<?php
$str1 = "apple banana cherry banana";
$str2 = "cherry";
$index = strpos($str1, $str2);
echo "Index of substring is: $index";
?>

Index of substring is: 13

In this tutorial, we learned How to find the Index of Substring in PHP language with well detailed examples.