Detailed explanation of the usage of str_pad() function in php

This article mainly introduces the usage of str_pad() function in php. It analyzes the function, parameter meaning and specific usage method of str_pad() function in php in more detail. Friends who need it can refer to it

The example in this article describes the usage of str_pad() function in php. Share it with everyone for your reference, the details are as follows:

str_pad() Function fills the string with the new length.

Syntax:

str_pad(string,ength,pad_string,pad_type);

Parameter list:

Parameters	Description
string	Required. Specifies the string to be filled.
length	Required. Specifies the new string length. If the value is less than the original length of the string, no operation is performed.
pad_string	Optional. Specifies the string used for padding. The default is blank.
pad_type	Optional. Specifies which side of the string to fill. Possible values: STR_PAD_BOTH - Pad both sides of the string. If it's not an even number, the right side gets extra padding. STR_PAD_LEFT - pad the left side of the string. STR_PAD_RIGHT - Pad the right side of the string. default.

For example:

class test{
 private $var;
 public function __construct($var){
 $this->var=$var;
 }
 public function test(){
 $result=str_pad($this->var,30,"*");
 return $result;
 }
}
$T=new test("hello");
$result=$T->test();
echo $result;

output:

hello*************************

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