Case sensitive string comparison

Case sensitive string comparision can be done by using strcmp function in PHP.
echo strcmp("Hello world","HELLO WORLD");
Output is equal to
  • 0 : if both strings are equal or matching
  • < 0 : if string 1 is less than string 2
  • > 0 : if string 1 is greater than string 1
For a case in sensitive string comparison use strcasecmp function

Here is a sample code using strcomp function to check two strings.

Example 1

$str1="Hello World";
$str2="hello world";
echo strcmp($str1,$str2); // Output is -1 
echo "<br>";
if(strcmp($str1,$str2)==0){
echo "Both strings are matching";
}else{
echo "Both strings are different ";
}
Output is
-1
Both strings are different
Example 2
$str1="Hello World";
$str2="Hello World";
echo strcmp($str1,$str2); // Output is 0 
echo "<br>";
if(strcmp($str1,$str2)==0){
echo "Both strings are matching";
}else{
echo "Both strings are different ";
}
Output is here
0
Both strings are matching
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PHP String Functions

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