Performing case-insensitive replacement by using str

PHP Code

Output

<!doctype html>
<html>

<head>

<style>
.divcls {
  background: #004000;
  height: auto;
  width:290px;
  border-radius: 15px;
  padding:20px;
  font-size:17px;
  color:#fff;   
}
span{
    background: #FA4238;
}
</style>
 

  
</head>
<body>
<div class="divcls"><h3>str_replace is case-sensitive</h3><br /><br />
< ?php

$source_string = ("This Is A Test Sentence With Titlecase </br>this is a test sentence with small letters. </br>This Is A Test Sentence With Titlecase </br>this is a test sentence with small letters.");


$str_replaced = str_ireplace("Test", "<span>TEST</span>", $source_string);

echo "The source string: <BR>" .$source_string ."<BR><BR><BR>";
echo "The replaced string: <BR>" .$str_replaced;
?>
</div>
</body>
</html>

str_replace is case-sensitive

The source string:
This Is A Test Sentence With Titlecase
this is a test sentence with small letters.
This Is A Test Sentence With Titlecase
this is a test sentence with small letters.

The replaced string:
This Is A TEST Sentence With Titlecase
this is a TEST sentence with small letters.
This Is A TEST Sentence With Titlecase
this is a TEST sentence with small letters.