strcmp() : Case sensitive string comparison

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

Case in sensitive string comparison use strcasecmp() function

Sample code using strcmp 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

String Functions strcasecmp(): Case sensitive string comparison str_replace(): String replace
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