CODEWITHSUNDEEP
phpstringcomparison
ime.devdesks
ime.devdesks

Reputation: 394

PHP string comparison gives wrong output:

I am using this code for comparing string values in a method, which work perfectly. But for some value it gives wrong value, for example below values:

Code:

$string1 = "65";
$string2 = "5-fold";
$result = strcasecmp($string1, $string2);

switch ($result) {
    case -1: print "65 comes before 5-fold"; break;
    case 0: print "65 and 5-fold are the same"; break;
    case 1: print "65 comes after 5-fold"; break;
}

Output:

65 comes after 5-fold

I use this code for sorted array list, which sort them like ( 65 comes before 5-fold ). may be this output of because the " - " or something else i don't know. Do you have any idea about this.....

Below code Sort the multi-dimensional array:

       foreach($index_terms as $c=>$key) {
            $sort_id[] = $key['id'];
            $sort_term[] = $key['term'];
            $sort_freq[] = $key['freq'];
        }

        array_multisort($sort_term, SORT_ASC, $index_terms);

Upvotes: 0

Views: 387

Answers (3)

Jonathan de M.
Jonathan de M.

Reputation: 9808

try to use Intval

strcasecmp compare the binary value of your string

$string1 = intVal("65"); 
$string2 = intVal("5-fold");  
$result = strcasecmp($string1, $string2);

switch ($result) {
    case -1: print "65 comes before 5-fold"; break;
    case 0: print "65 and 5-fold are the same"; break;
    case 1: print "65 comes after 5-fold"; break; }

Upvotes: 0

Dr.Kameleon
Dr.Kameleon

Reputation: 22810

Code :

<?php
    $string1 = "65";
    $string2 = "5-fold";
    $result = strcasecmp($string1, $string2);

    echo $result;
?>

Output :

1

Hint : There's nothing wrong with your output. 1 means the second operand is greater, -1 means the first operand is greater.

Upvotes: 0

Jack
Jack

Reputation: 5768

You're comparing 65 to 5-fold. It returns -1 if 65 is less than 5-fold and 1 if 65 is greater than 5-fold.

65 is greater than 5-fold... I don't see the problem?

What is 5-fold supposed to be that you want 65 to come before it?

Upvotes: 1

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