php check if associative array
// return true if array is associative
function checkAssoc($array) {
$nonAssociative = count(array_filter(array_keys($array), 'is_string')) === 0;
if ($nonAssociative) {
return false;
} else {
return true;
}
}
// Example
$array = ["el1" => 1, "el2" => 2, "el3" => 3];
checkAssoc($array);
// bool(true)what is use of in_array() function in php
The in_array() function is an inbuilt function in PHP.
The in_array() function is used to check whether a given value exists in an array or not.
It returns TRUE if the given value is found in the given array, and FALSE otherwise.
<?php
$people = array("Peter", "Joe", "Glenn", "Cleveland");
if (in_array("Glenn", $people))
{
echo "Match found";
}
else
{
echo "Match not found";
}
?>keys of array exist in array
function findKey($array, $keySearch)
{
foreach ($array as $key => $item) {
if ($key == $keySearch) {
echo 'yes, it exists';
return true;
} elseif (is_array($item) && findKey($item, $keySearch)) {
return true;
}
}
return false;
}Copyright © 2021 Codeinu
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