Countable::count

(PHP 5 >= 5.1.0, PHP 7)

Count elements of an object

abstract public int Countable::count ( void )

This method is executed when using the count() function on an object implementing Countable.

Returns:

The custom count as an integer.

Note:

The return value is cast to an integer.

Examples:

Countable::count() example

<?php
class myCounter implements Countable {
    private $count = 0;
    public function count() {
        return ++$this->count;
    }
}

$counter = new myCounter;

for($i=0; $i<10; ++$i) {
    echo "I have been count()ed " . count($counter) . " times\n";
}
?>

The above example will output something similar to:

I have been count()ed 1 times
I have been count()ed 2 times
I have been count()ed 3 times
I have been count()ed 4 times
I have been count()ed 5 times
I have been count()ed 6 times
I have been count()ed 7 times
I have been count()ed 8 times
I have been count()ed 9 times
I have been count()ed 10 times

Links:

http://php.net/manual/en/countable.count.php

doc_php

2016-02-24 16:20:11

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