Online PHP editor | refs for r2IWI

<?php function array_is_numerical($unsafeArray) { foreach($unsafeArray as $entry) { if (!is_numeric($entry)) { return false; } } return true; } $testArray = array(1,2,3,4,5); $testArray2 = array(1,2,3,'vier',5); $testNumber = 1; echo '(' . join(', ', $testArray) . ')'; echo '<br>'; echo(array_is_numerical($testArray)); echo '<br>'; echo(array_is_numerical($testArray2));