Question

How to check if an array contains a value in PHP

Answer 1

$arr = [673, 8, 981, 23, 4];

echo in_array(981, $arr) . "\n"; 

if (in_array(5, $arr))
    echo "yes";
else
    echo "no";
    
    
    

/*
run:

1
no

*/

 

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Answer 2

// in_array(mixed $needle, array $haystack, bool $strict = false): bool

$arr = [673, 8, 981, "23", 4];
 
echo in_array(23, $arr) . "\n"; 

echo in_array("23", $arr) . "\n"; 

if (in_array(23, $arr, true))
    echo "yes" . "\n"; 
else
    echo "no" . "\n"; 
    
if (in_array("23", $arr, true))
    echo "yes" . "\n"; 
else
    echo "no" . "\n";    
     
     
     
 
/*
run:
 
1
1
no
yes
 
*/

 

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