strcmp() : Case sensitive string comparison

echo strcmp("Hello world","HELLO WORLD"); // Output is 1 

• 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

$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 ";
}

-1
Both strings are different

$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 ";
}

0
Both strings are matching