(PHP 4, PHP 5) Replace regular expression case insensitive

(PHP 4, PHP 5, PHP 7) Make a string's first character uppercase

Examples: Use of this modifier is discouraged, as it can easily introduce security vulnerabilites:

(PHP 4, PHP 5, PHP 7) Calculate the md5 hash of a string

(PHP 4, PHP 5, PHP 7) Return ASCII value of character

(PHP 4, PHP 5, PHP 7) Convert a quoted-printable string to an 8 bit string

(PHP 5, PHP 7) Case-insensitive version of

(PHP 4, PHP 5, PHP 7) Convert logical Hebrew text to visual text with newline conversion

(PHP 4, PHP 5, PHP 7) Make a string uppercase

(PHP 4, PHP 5, PHP 7) Alias of