take_array.php

<style>
	body > div {
		padding: 10px;
		border-style: solid;
		border-width: 1px;
		border-color: black;
	}
	.array {
		margin: 5px;
		padding: 10px;
		background-color: rgb(221, 221, 221);
	}
	.array_element {
		padding-left: 50px;
	}
	.take {
		margin: 10px;
		color: red;
	}
</style>

<?php

//pretty print array
function array_print($name, $array) {
	echo "<div class='array'>$name<br>(<br><div class='array_element'>";
	foreach ($array as $key => $value) {
		echo "($key) -> $value,<br>";//$key . $value . ",<br>";
	}
	echo "</div>)</div>";
}


//---------------------------------------------------------------------------------------
echo "<h1>方法一</h1><div>";
//---------------------------------------------------------------------------------------

function array_take(&$array, $index) {
	$value = $array[$index];
	$array =  array_merge( array_slice($array, 0, $index), array_slice($array, $index + 1) );
	return $value;
}

$array = array(1,2,3,4,5);

$index = 3;

array_print("原始array",$array);

echo "<div class='take'>take array[$index] -> " . array_take($array, $index) . "</div>";

array_print("array",$array);

//---------------------------------------------------------------------------------------
echo "</div><h1>方法二</h1><div>";
//---------------------------------------------------------------------------------------

function array_take_2(&$array, $index) {
	$value = $array[$index];
	unset($array[$index]);
	$array = array_values($array);
	return $value;
}
$array = array(1,2,3,4,5);

$index = 3;

array_print("原始array",$array);

echo "<div class='take'>take array[$index] -> " . array_take_2($array, $index) . "</div>";

array_print("array",$array);

echo "</div>";
?>