php key exists
// Here's our fruity array
$fruits = ['apple', 'pear', 'banana'];
// Use it in an `if` statement
if (array_key_exists("banana", $fruits)) {
// Do stuff because `banana` exists
}
// Store it for later use
$exists = array_key_exists("peach", $fruits);if don't exist key json php
<?php
$search_array = array('first' => 1, 'second' => 4);
if (array_key_exists('first', $search_array)) {
echo "The 'first' element is in the array";
}
?>php check if associative array
// return true if array is associative
function checkAssoc($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)Copyright © 2021 Codeinu
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