php str_pad () function syntax

php str_pad () function syntax

str_pad () function how to use?

php str_pad () function is used to fill the string to a specified length, the syntax is str_pad (string, length, pad_string, pad_type), filling the string length specified. Marble feet

Effect: the string is filled into the specified length

语法：str_pad(string,length,pad_string,pad_type)

parameter:

parameter	description
string	Must require the string to be filled,
length	It must new predetermined length of the string, if the value is less than the original length of the string, no operation.
pad_string	Optionally, the provisions of the string used to fill, the default is blank.
pad_type	Alternatively, filling a predetermined string which side, STR_PAD_BOTH - on both sides of the filling of the string, if not an even number, the right side of the additional padding. STR_PAD_LEFT - side of the filler strings. STR_PAD_RIGHT - filling the right of the string, by default.

Description: The character string specified length filled

php str_pad () function examples

? <PHP 
$ I = "Hello World"; 
$ J = str_pad (I $, 30, "!"); // string filling position is not set, the default is right 
echo $ J; 
echo "<br>"; 
= K $ "Hello World"; 
$ H = str_pad ($ K, 30,, STR_PAD_LEFT "."); // set the position of the string is left filled 
echo $ H; 
?>