What is the significance of the strpos function in the context of the provided PHP code?

The strpos function is used in the provided PHP code to check if a specific substring exists within a given string. In this context, the function is being used to determine if the string "example" is present in the variable $input. If the substring is found, the function returns the position of the first occurrence of the substring in the string, otherwise it returns false. This helps in performing conditional checks or extracting specific information from a string. 

$input = "This is an example string";
$substring = "example";

if (strpos($input, $substring) !== false) {
    echo "Substring found at position: " . strpos($input, $substring);
} else {
    echo "Substring not found";
}

Keywords

strpos PHP code significance function context

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