Are there any alternative functions or methods in PHP that can achieve the same result as substr_replace()?

The issue is to replace a portion of a string with another substring at a specified position. One alternative method in PHP that can achieve the same result as substr_replace() is using substr() to get the parts of the string before and after the portion to be replaced, then concatenating the new substring in between.

$string = "Hello, world!";
$replacement = "everyone";
$start = 7;
$length = 5;

$newString = substr($string, 0, $start) . $replacement . substr($string, $start + $length);
echo $newString; // Output: Hello, everyone!