What potential issue could cause PHP to be built without PCRE?

If PHP is built without PCRE support, regular expression functions will not work properly. To solve this issue, you need to rebuild PHP with PCRE support enabled. This can be done by installing the PCRE library and then configuring PHP with the --with-pcre-regex flag during the build process. 

// Example PHP code snippet to check if PCRE is enabled
if (extension_loaded('pcre')) {
    echo 'PCRE is enabled in this PHP build.';
} else {
    echo 'PCRE is not enabled in this PHP build. Regular expression functions will not work properly.';
}

Keywords

PCRE PHP build issue regex

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