Question

I don’t know if a array is really a object on php … but, what I want is to change the array behavior on a foreach loop.

Something similar to this on java:

for( String it : myArr = new Array_Iterator( array) implements Iterator{
    public Array_Iterator( String[] arr){ this.arr = arr}
    /* interface implementation */
}){
    /* loop */
}

What I really want to accomplish is a kind of filter, so that I don’t get entries from the array that I don’t want

Answer 1

Just wrap the Array into an ArrayIterator and you’re free to overwrite the regular methods. The Spl provides a number of other Iterators and Interfaces you might find useful. To filter arrays through iterators, use could use the FilterIterator.

Example from PHP Manual:

<?php
// This iterator filters all values with less than 10 characters
class LengthFilterIterator extends FilterIterator {
    public function accept() {
        // Only accept strings with a length of 10 and greater
        return strlen(parent::current()) > 10;
    }
}

$arrayIterator = new ArrayIterator(array('test1', 'more than 10 characters'));
$lengthFilter = new LengthFilterIterator($arrayIterator);

foreach ($lengthFilter as $value) {
    echo $value . "\n"; // ignores "test1" in array
}