What is the correct syntax for using preg_replace with custom tags in PHP?

When using preg_replace with custom tags in PHP, you need to properly escape the custom tags to prevent any unexpected behavior or errors. This can be done by using the preg_quote function to escape the custom tags before using them in the regular expression pattern. By doing this, you ensure that the custom tags are treated as literal characters in the regex pattern and not as special regex characters.

// Example of using preg_replace with custom tags
$customTag = "<tag>";
$escapedCustomTag = preg_quote($customTag);
$string = "This is a <tag> custom tag example";
$pattern = "/$escapedCustomTag/";
$replacement = "replacement";
$replacedString = preg_replace($pattern, $replacement, $string);
echo $replacedString;