PHP mobile phone number in the middle of replacing asterisks example _php tutorial

Today, small part of the students to introduce the use of preg_replace function to the middle of a number of mobile phone numbers to replace the Chengshing number, this in many sites will have to do so, let me introduce the example method.

Regular Expression methods

1, the string contains more than one mobile phone number

The code is as follows	Copy Code
$s = ' manager Wang: 13999312365 manager li: 13588958741 '; $s =preg_replace (' # (D{3}) d{5} (D{3}) # ', ' ${1}*****${2} ', $s); Echo $s; Manager Wang: 139*****365 li: 135*****741 ?>

2, only one mobile phone number in the string

The code is as follows	Copy Code
$haoma = "15012345678"; echo Preg_replace ("/(D{3}) d{5}/", "$1*****", $haoma); 150*****678 ?>

Do not implement regular expressions
1. Replace the function with the Substr_replace string part

The code is as follows	Copy Code
$string 1 = "13264309555"; Echo Substr_replace ($string 1, ' * * * * *, 3,5); 132*****555 ?>

2. Using the string intercept function substr

The code is as follows	Copy Code
Echo substr ($string 1,0,3). " ". substr ($string 1,8,3); 132*****555 ?>

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