PHP switch/case statement with case-insensitive string comparison

Question

Switch/case string comparison is case-sensitive.

<?php
$smart = "crikey";

switch ($smart) {
     case "Crikey":
         echo "Crikey";
         break;
     case "Hund":
         echo "Hund";
         break;
     case "Kat":
         echo "Kat";
         break;
     default:
         echo "Alt Andet";
}
?>

Above code prints "Alt Andet", but I would like to compare strings case-insensitively and print "Crikey". How can I do that?

Why do you think a switch statement would be case insensitive? crikey and Crikey aren't the same. Knowing that, work around it and strtoupper or strtolower the values. Alternatively, uppercase the 1st letter of your variable when doing comparisons. Also, why would you want it that way anyway? — N.B.
– N.B., Commented Mar 31, 2015 at 23:46
He just told you--Force everything to lower case with strtolower($smart), make your case "crickey": and so on and so forth. — BigScar
– BigScar, Commented Mar 31, 2015 at 23:51
Just use a lowercased string to switch and update your cases: eval.in/307176 — scrowler
– scrowler, Commented Mar 31, 2015 at 23:52

tnchalise · Accepted Answer · 2015-04-01 00:35:50Z

31

Convert the input to either uppercase or lowercase, problem solved.

<?php
$smart = "cRikEy";

switch (strtolower($smart)) {
     case "crikey": // Note the lowercase chars
         echo "Crikey";
         break;
     case "hund":
         echo "Hund";
         break;
     case "kat":
         echo "Kat";
         break;
     default:
         echo "Alt Andet";
}
?>

answered Apr 1, 2015 at 0:35

tnchalise

1,5832 gold badges19 silver badges39 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Erdem Olcay · Accepted Answer · 2015-04-01 01:05:48Z

7

Use stristr() function on case statements. stristr() is case-insensitive strstr() and returns all of haystack starting from and including the first occurrence of needle to the end.

<?php

$smart = "crikey";

switch ($smart) {
     case stristr($smart, "Crikey"):
         echo "Crikey";
         break;
     case stristr($smart, "Hund"):
         echo "Hund";
         break;
     case stristr($smart, "Kat"):
         echo "Kat";
         break;
     default:
         echo "Alt Andet";
}

?>

edited Apr 1, 2015 at 1:05

answered Apr 1, 2015 at 0:59

Erdem Olcay

4276 silver badges13 bronze badges

Comments

Alupotha · Accepted Answer · 2015-04-01 00:36:35Z

2

if you use lower case inputs then you can convert them to capitalized first character of each word in a string

ucwords — Uppercase the first character of each word in a string

<?php
$smart = "crikey";

switch (ucwords($smart)) {
     case "Crikey":
         echo "Crikey";
         break;
     case "Hund":
         echo "Hund";
         break;
     case "Kat":
         echo "Kat";
         break;
     default:
         echo "Alt Andet";
}
?>

helpful links from doc:

first character of each word
Make a string's first character uppercase
Make a string lowercase
Make a string uppercase

edited Apr 1, 2015 at 0:36

answered Apr 1, 2015 at 0:31

Alupotha

10.2k4 gold badges50 silver badges48 bronze badges

Collectives™ on Stack Overflow

PHP switch/case statement with case-insensitive string comparison

3 Answers 3

Comments

Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

Comments

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related