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(I'm a beginner)
My script uses the standard
$c = 0;
$t = count($array);
while ($c < $t) {
$blah = $array[$c];
++$c;
}
rather extensively. But I just ran into a situation where I also need array_diff and it breaks that all to hell because now the numeric keys have gaps. I'm getting Undefined offset errors all over the place.
How do I reset the numeric keys of an array? The order of the objects in the array is irrelevant.
691
The array_diff() function compares the values of two (or more) arrays, and returns the differences. This function compares the values of two (or more) arrays, and return an array that contains the entries from array1 that are not present in array2 or array3, etc.
Note: Only the difference in using [] or array() is with the version of PHP you are using. In PHP 5.4 you can also use the short array syntax, which replaces array() with [].
The Arrays. equals() method checks the equality of the two arrays in terms of size, data, and order of elements. This method will accept the two arrays which need to be compared, and it returns the boolean result true if both the arrays are equal and false if the arrays are not equal.
The array_diff() (manual) function can be used to find the difference between two arrays: $array1 = array(10, 20, 40, 80); $array2 = array(10, 20, 100, 200); $diff = array_diff($array1, $array2); // $diff = array(40, 80, 100, 200);
To reset the keys, you can use array_values():
$array = array_values($array);
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