<? PHP $mobile = "15810320826"echosubstr_replace($mobile, ' * * * ', 3, 4 ?>
Substr_replace
(PHP 4, PHP 5)
substr_replace- a substring of a replacement string
Descriptionmixed substr_replace ( mixed
$string
, mixed
$replacement
, mixed
$start
[, mixed
$length
])
Substr_replace () is substituted in a copy of the string by using a substring that is qualified with the string
start
optional length
parameter replacement
.
Parameters
-
-
string
-
-
The input string.
An array of strings can is provided, in which case the replacements would occur on each string in turn. In this case, replacement
the, start
and length
parameters may provided either as scalar values to is applied to each input str ing in turn, or as arrays, in which case the corresponding array element would be a used for each input string.
-
-
replacement
-
-
The replacement string.
-
-
start
-
-
If start
positive, the replacement will string
start at the start
position.
If start
it is negative, the substitution string
starts at the penultimate start
position.
-
-
length
-
-
If this parameter is set and is positive, the string
length of the substring being replaced is indicated. If set to negative, it represents the number of characters at the end of the substring to be replaced string
. If this parameter is not provided, it defaults to Strlen ( string
) (the length of the string). Of course, if it length
is 0, then the function is where it will be replacement
inserted string
start
.
return value
Returns the result string. If string
It is a group, an array will also be returned.
Substr_replace () Function: Hide the middle 4 digits of the phone number as the * number