Case insensitive string comparison

We can compare two strings without considering their case by using strcasecmp function. This function takes two string inputs and returns 0 if both the strings are equal ( or matching ), returns < 0 if fist string is less than second string and returns > 0 of fist string is greater than second string.

For case sensitive string matching use strcmp function

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

$str1="Hello World";
$str2="hello world";
echo strcasecmp($str1,$str2);
if(strcasecmp($str1,$str2)==0){
echo "Both strings are matching";
}else{
echo "Both strings are different ";
}

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PHP String Functions

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