Get the index value of an array in PHP

Question

I have an array:

$list = array(\'string1\', \'string2\', \'string3\');

I want to get the index for a given value (i.e. 1 for <

Answer 1

Other folks have suggested array_search() which gives the key of the array element where the value is found. You can ensure that the array keys are contiguous integers by using array_values():

$list = array(0=>'string1', 'foo'=>'string2', 42=>'string3');
$index = array_search('string2', array_values($list));
print "$index\n";

// result: 1

You said in your question that array_search() was no use. Can you explain why? What did you try and how did it not meet your needs?