How to replace English periods with other characters in php

In PHP, you can use the str_ireplace() function to replace the English period "." with other characters; this function can search for the value of the first parameter in the string. If the value exists, then It is replaced by the value of the second parameter, and the syntax is "str_ireplace(".","Specified other characters", string)".

The operating environment of this tutorial: windows7 system, PHP7.1 version, DELL G3 computer

In PHP, you can use the str_ireplace() function to replace the English period "." with other characters.

str_ireplace() function is used to search and replace some characters in a string.

str_ireplace(find,replace,string,count)

Parameters	Description
find	Required . Specifies the value to look for.
replace	Required. Specifies a value that replaces the value in find.
string	Required. Specifies the string to be searched for.
count	Optional. A variable counting the number of substitutions.

str_ireplace() function must follow the following rules:

• If the searched string is an array, then it will return an array.

• If the searched string is an array, then it will find and replace each element in the array.

• If an array needs to be searched and replaced at the same time, and the elements to be replaced are less than the number of found elements, the excess elements will be replaced with empty strings .

• If you search an array and replace only one string, the replacement string will work for all found values.

Example 1: In the string, replace the English period with other characters

<?php
header(&#39;content-type:text/html;charset=utf-8&#39;);   
$str = "This is a paragraph.";
echo str_ireplace(".","!",$str)."<br>";
echo str_ireplace(".","~",$str)."<br>";
echo str_ireplace("."," 123654",$str)."<br>";
?>

Example 2: In the array, replace the English period with other characters Replace periods with other characters

<?php
header(&#39;content-type:text/html;charset=utf-8&#39;);   
$arr = array("1","2"," ",".","hello.",".hello");
var_dump($arr);
var_dump(str_ireplace(".","!",$arr));
var_dump(str_ireplace(".","~",$arr));
var_dump(str_ireplace("."," 123654",$arr));
?>

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