PHP converts a string to an uppercase function Strtoupper ()

Source: Internet
Author: User

Instance

Convert all characters to uppercase:

<?phpecho strtoupper ("Hello world!");? >

Definition and usage

The Strtoupper () function converts a string to uppercase.

Note: This function is binary safe.

Related functions:

    • Strtolower ()-Converts a string to lowercase

    • Lcfirst ()-Converts the first character in a string to lowercase

    • Ucfirst ()-Converts the first character in a string to uppercase

    • Ucwords ()-Converts the first character of each word in a string to uppercase

Grammar

Strtoupper (String)
Parameters Describe
String Necessary. Specifies the string to convert.

Technical details

return value: Returns a string converted to uppercase.
PHP version: 4 +

The Strtoupper () function converts a string to uppercase

Public Function set_kw ($kw) {        $_intasc=ord (substr ($kw, 0,1));        if ($_intasc>64 and $_intasc<91) or ($_intasc>96 and $_intasc<123) {            $this->set_query_q (' Pinyin: ') . Strtoupper ($kw). ' *');        } else{            $this->set_dismax_model ();            $this->set_query_q ($kw);            $this->set_query_qf ("name^10 address^5");        }    }

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