PHP: If a equals b or c or d

Question

Possible Duplicate:
Short hand to do something like: if($variable == 1 || $variable == “whatever” || $variable == '492') .

Is this

if ($a==b||$a==c||$a==$d){ ...

the shortest way to describe this logic. I am thinking about something like

if ($a==($b||$c||$d)) { ...

but that is not a valid code. Any suggestions?

THis is not correct because you are try to do boolean or with || between non boolean values. — rkosegi, Jul 23 '12 at 11:24
I wonder if there's a way to avoid repetitions to make code more understandable. — Martin, Jul 23 '12 at 11:26
In the new php update, you can also use this method ``$variable = "492" ; if($variable == 1 || "whatever" || '492'){ echo "true"; }`` https://stackoverflow.com/a/76488987/16152434 — Aref Solaimany, Jun 16 '23 at 09:57

score 13 · Accepted Answer · answered Jul 23 '12 at 11:25

13

You could use in_array:

if( in_array($a, array($b,$c,$d)) ){
    //do something
}

answered Jul 23 '12 at 11:25

Engineer

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You should have closed this question as duplicate... – Felix Kling Jul 23 '12 at 11:40

score 2 · Answer 2 · answered Jul 23 '12 at 11:26

2

That is valid code but not logically correct.

If you have lots of values then you could do something like this.

if(in_array($a,array($b,$c,$d))) {
}

answered Jul 23 '12 at 11:26

bigkm

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Good answer, but it is the same as @Engineer wrote a minute ago. – Fluffeh Jul 23 '12 at 11:27
@Fluffeh: And the same as ascii-lime wrote 9 months ago. – Felix Kling Jul 23 '12 at 11:31
@FelixKling No doubt that there are duplicates, just went as far as looking at this Q&A to see duplicates :) – Fluffeh Jul 23 '12 at 11:33

score 1 · Answer 3 · answered Jul 23 '12 at 11:25

1

That both are not same as || is boolean operator and will always return true or false. So in second statement, you are comparing if $a is true or false.

You can use in_array to compare if $a exists in array($b, $c, $d)

answered Jul 23 '12 at 11:25

Riz

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score 1 · Answer 4 · answered Jul 23 '12 at 11:26

1

don't know why You want to do some sort of thing, but You can put b,c,d in array and call in_array function to search for elements. Still I can't understand why You want to short and simple code make short and not simple.

answered Jul 23 '12 at 11:26

pawel-kuznik

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Because I have about 15 values which I want get me in the IF – Martin Jul 23 '12 at 11:30
so in_array as suggested by me and others. – pawel-kuznik Jul 23 '12 at 11:31

PHP: If a equals b or c or d

4 Answers4

Linked