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80 lines
1.8 KiB
PHP
80 lines
1.8 KiB
PHP
--TEST--
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Test array_reduce() function
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--INI--
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precision=14
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--FILE--
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<?php
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/* Prototype: array array_reduce(array $array, mixed $callback, mixed $initial);
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Description: Iteratively reduce the array to a single value via the callback
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*/
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$array = array('foo', 'foo', 'bar', 'qux', 'qux', 'quux');
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echo "\n*** Testing array_reduce() to integer ***\n";
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function reduce_int($w, $v) { return $w + strlen($v); }
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$initial = 42;
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var_dump(array_reduce($array, 'reduce_int', $initial), $initial);
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echo "\n*** Testing array_reduce() to float ***\n";
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function reduce_float($w, $v) { return $w + strlen($v) / 10; }
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$initial = 4.2;
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var_dump(array_reduce($array, 'reduce_float', $initial), $initial);
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echo "\n*** Testing array_reduce() to string ***\n";
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function reduce_string($w, $v) { return $w . $v; }
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$initial = 'quux';
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var_dump(array_reduce($array, 'reduce_string', $initial), $initial);
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echo "\n*** Testing array_reduce() to array ***\n";
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function reduce_array($w, $v) { $w[$v]++; return $w; }
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$initial = array('foo' => 42, 'bar' => 17, 'qux' => -2, 'quux' => 0);
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var_dump(array_reduce($array, 'reduce_array', $initial), $initial);
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echo "\n*** Testing array_reduce() to null ***\n";
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function reduce_null($w, $v) { return $w . $v; }
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$initial = null;
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var_dump(array_reduce($array, 'reduce_null', $initial), $initial);
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echo "\nDone";
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?>
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--EXPECTF--
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*** Testing array_reduce() to integer ***
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int(61)
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int(42)
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*** Testing array_reduce() to float ***
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float(6.1)
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float(4.2)
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*** Testing array_reduce() to string ***
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string(23) "quuxfoofoobarquxquxquux"
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string(4) "quux"
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*** Testing array_reduce() to array ***
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array(4) {
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["foo"]=>
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int(44)
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["bar"]=>
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int(18)
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["qux"]=>
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int(0)
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["quux"]=>
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int(1)
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}
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array(4) {
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["foo"]=>
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int(42)
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["bar"]=>
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int(17)
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["qux"]=>
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int(-2)
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["quux"]=>
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int(0)
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}
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*** Testing array_reduce() to null ***
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string(19) "foofoobarquxquxquux"
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NULL
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Done
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