How to use php str_pad function?

php The str_pad() function is used to fill a string to a specified length. The syntax is "str_pad(string,length,pad_string,pad_type)" and returns the filled string; it can be filled with any other string Enter a string until it reaches the specified length.

#php How to use str_pad function?

php str_pad function can pad the string to the specified length

Syntax:

str_pad(string,length,pad_string,pad_type)

Parameters:

● String is required, specifies the string to be filled,

● length is required, specifies the new string length, if the value is less than the original length of the string, then No action is taken.

● pad_string is optional and specifies the string used for padding. The default is blank.

● pad_type is optional and specifies which side of the string to fill. STR_PAD_BOTH -- fills both sides of the string. If it is 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.

Description: We can fill the input string with any other string until the specified length is reached. If we do not pass another string to the str_pad() function, then the input string will be padded with spaces.

Example:

<?php
$i = "hello world";
$j = str_pad($i,30,"!"); //未设置填充字符串位置，默认为右侧
echo $j;
echo "<br>";
$k = "hello world";
$h = str_pad($k,30,".",STR_PAD_LEFT);//设置填充字符串的位置为左侧
echo $h;
?>

Output:

hello world!!!!!!!!!!!!!!!!!!!
...................hello world

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