A few useful PHP string filters, conversion function code

NL2BR ();/\ n to

Addslashes (); Stripslashes ();//Escape special characters when working on a database

Chop ();//Remove the right space of the string
Trim ();//Remove all spaces in the string
LTrim ();//Remove the left space of the string

Htmlspecialchars ();//convert ' $ ', ' ' ', ' < ', ' > ' for the corresponding HTML entity
Htmlentities ();//Convert all HTML tags to the corresponding HTML entities

Array explode (string separator, string str);//Split string
String implode (string separator, array arr);//Connection string

Strtoupper (); Strtolower ();//Convert case
Ucfirst ();//convert only the first character to uppercase
Ucwords ();//Convert the first letter of each words to uppercase

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