Question

How to remove a portion of an array in PHP

Answer 1

$arr = array("C", "PHP", "C#", "WIN32-API", "C++", "VB.NET", "JAVA");
echo "arr: ";
print_r($arr);
echo "<br>";
$a = array_splice($arr, 3);
echo "a = array_splice(arr, 3);<br>arr: ";
print_r($arr); // Array ( [0] => C [1] => PHP [2] => C# )
echo "<br>a: ";
print_r($a); // Array ( [0] => WIN32-API [1] => C++ [2] => VB.NET [3] => JAVA )
echo "<br><br>";

$arr = array("C", "PHP", "C#", "WIN32-API", "C++", "VB.NET", "JAVA");
echo "arr: ";
print_r($arr);
echo "<br>";
$a = array_splice($arr, 1, -1);
echo "a = array_splice(arr, 1, -1);<br>arr: ";
print_r($arr); // Array ( [0] => C [1] => JAVA )
echo "<br>a: ";
print_r($a); // Array ( [0] => PHP [1] => C# [2] => WIN32-API [3] => C++ [4] => VB.NET )
echo "<br><br>";

$arr = array("C", "PHP", "C#", "WIN32-API", "C++", "VB.NET", "JAVA");
echo "arr: ";
print_r($arr);
echo "<br>";
$a = array_splice($arr, 1, count($arr));
echo "a = array_splice(arr, 1, count(arr));<br>arr: ";
print_r($arr); // Array ( [0] => C )
echo "<br>a: ";
print_r($a); // Array ( [0] => PHP [1] => C# [2] => WIN32-API [3] => C++ [4] => VB.NET [5] => JAVA )
echo "<br><br>";

$arr = array("C", "PHP", "C#", "WIN32-API", "C++", "VB.NET", "JAVA");
echo "arr: ";
print_r($arr);
echo "<br>";
$a = array_splice($arr, 5, 1);
echo "a = array_splice(arr, 5, 1);<br>arr: ";
print_r($arr); // Array ( [0] => C [1] => PHP [2] => C# [3] => WIN32-API [4] => C++ [5] => JAVA )
echo "<br>a: ";
print_r($a); // Array ( [0] => VB.NET )
echo "<br><br>";

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