IntlChar::isJavaIDStart - Check if code point is permissible as the first character in a Java identifier

Switching and Migrating from PHP 5 to PHP 7: Update from php ...

... character IntlChar::isalpha — Check if code point is a letter character IntlChar::isbase — Check if code point is a base character IntlChar::isblank ... IntlChar::isULowercase — Check if code point has the Lowercase Unicode - 130 -