10/12/2023 0 Comments Accessing key in foreach php![]() #Accessing key in foreach php how toIm not sure how to go about making it recursive, but I didnt need that. That being said, I looked for a method of normalizing the array and couldnt find one, so I built my own. I wound up with off ball arrays I couldnt access. ![]() As always it depends on the exact use case, but for associative arrays with less than 100.000 keys it is faster to store array_keys($arr) in a variable and use this in a foreach loop. arraykeys (PHP 4, PHP 5, PHP 7, PHP 8) arraykeys Return all the keys or a subset of the keys of an array. But time went by and now using PHP 7.2 it seems to be the other way around. The recommendation above assumes PHP 5.6 (the relevant version at the time of writing this answer). This will stop phpmd from reporting $notUsed anywhere inside a foreach loops. The foreach loop traverses through an array whose keys and elements can be accessed in the loop. ![]() We can use a foreach loop to check the foreach loop key value. Use the foreach Loop to Check the foreach Loop Key Value in PHP. In the file /src/main/php/PHPMD/Rule/UnusedLocalVariable.php in the method collectVariables(.) (line 123 in my case) replace if ($this->isLocal($variable))īy if ($this->isLocal($variable) & !($this->isChildOf($variable, 'ForeachStatement') & $variable->getName() = '$notUsed')) This article will introduce a method to check the foreach loop key value in PHP. ![]() Until phpmd is updated you can also use this little hack This issue of phpmd is already reported here and there is also already a pull request here. foreach(array_keys($arr) as $key) is about 50% to 60% slower foreach with Array In this example, we will take an indexed array of elements, iterate over each of the elements in the array, and execute a block of code (or statements) for each element. It is right, that you should avoid unused variables, but in this case you cannot avoid it, without losing some performance.Į.g. You can access the key and value during each iteration using the variables key and value. In PHP the way you used foreach is the fastest. ![]()
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