Question

How to find dictionary value using key in PHP

Answer 1

$arr = array("php"=>99, "c"=>107, "c++"=>21, "java"=>91);

echo $arr['c'];





/*
run:

107

*/

 

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Answer 2

$arr = array("php"=>99, "c"=>107, "c++"=>21, "java"=>91);

if (isset($arr['python'])) {
    echo $arr['c'];
} else {
    echo "key not set";
}






/*
run:

key not set

*/

 

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Answer 3

$arr = array("php"=>99, "c"=>107, "c++"=>21, "java"=>91);

foreach ($arr as $key => $value) {
    echo $value . "\n";
}




/*
run:

99
107
21
91

*/

 

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