modify1($a1); modify1($a2); echo "<h3>After modify1 the arrays are:</h3>"; showa($a1); showa($a2); // modify2 will modify the parameters within the functions but leave the // argument arrays unchanged modify2($a1); modify2($a2); echo "<h3>After modify2 the arrays are:</h3>"; showa($a1); showa($a2); // modify3 will modify the argument arrays modify3($a1); modify3($a2); echo "<h3>After modify3 the arrays are:</h3>"; showa($a1); showa($a2); showaRec($a2, 0); echo "<hr/>\n"; // Demonstrating local vs. global variables globloc(); echo "Back in main: <br/>\n"; print_r($a1); echo "<br/>\n"; print_r($a2); echo "<br/>\n"; ?> </body> </html>
// Note that $a1 and $a2 below have identical keys and values.
// However, the actual arrays are not identical -- see output
$a1 = array(10, 20, 30, 40, 50);
$a2 = array(2 => 30, 4 => 50, 0 => 10, 3 => 40, 1 => 20);
// $a3, $a4 and $a5 have "non-traditional" keys, at least for Java or
// C++ programmers. Be careful when using these types of keys
$a3 = array(9 => 10, 10 => 20, 11 => 30, 12 => 40, 13 => 50);
$a4 = array("zero" => 10, "one" => 20, "two" => 30, "three" => 40, "four" => 50);
$a6 = array("2" => 30, "4" => 50, "0" => 10, "3" => 40, "1" => 20);
// Iterate using the foreach loop. Note the orderings.
showa($a1);
showa($a2);
showa($a3);
showa($a4);
showa($a5);
showa($a6);
// Iterate using "traditional" for loop. Note some missing values.
showb($a1);
showb($a2);
showb($a3);
showb($a4);
showb($a5);
showb($a6);
// The print_r function will print out all of the contents of a PHP
// array.
print_r($a1);
echo "<br/>\n";
print_r($a2);
echo "<br/>\n";
print_r($a3);
echo "<br/>\n";
{
for ($i = 0; $i < count($a); $i++) {
for ($j = 0; $j < count($a[$i]); $j++) {
echo $a[$i][$j], " ";
}
echo "<br/>\n";
}
}
$a1 = array(10, 20, 30, 40, 50);
$a2 = array("here", "is", array("an", "array", array("with", "several"), array("levels", "of")), array("nesting", "it", "is"), "quite", "wacky");
$a3[0] = array(1, 2, 3, 4);
$a3[1] = array(5, 6, 7, 8);
$a3[2] = array(9, 10, 11, 12);
showa($a1);
showa($a2);
showa($a3);
echo "<hr/>\n";
showMat($a2);
// Note the odd output for this call. Be sure you
// understand why it appears as it does
showMat($a3);
// This output looks more natural, since the data is stored
// in the traditional "matrix" fashion
// Note that neither method (showa, showMat) produces acceptable output for
// $a2. We will soon see how to process the array so that all of the data
// is accessed. One predefined way to show an array with arbitrary nesting
// is the print_r method as shown below.
echo "<hr/>\n";
print_r($a1);
echo "<br/><br/>\n";
print_r($a2);
// Let's look at some different arrays and how they are accessed
// Note that $a1 and $a1 below have identical keys and values.
// However, the actual arrays are not identical -- see output
$a1 = array(10, 20, 30, 40, 50);
$a2 = array(2 => 30, 4 => 50, 0 => 10, 3 => 40, 1 => 20);
// $a3, $a4 and $a5 have "non-traditional" keys, at least for Java or
// C++ programmers. Be careful when using these types of keys
$a3 = array(9 => 10, 10 => 20, 11 => 30, 12 => 40, 13 => 50);
$a4 = array("zero" => 10, "one" => 20, "two" => 30, "three" => 40, "four" => 50);
$a5 = array("zero" => 10, 1 => 20, 2 => 30, "three" => 40, 4 => 50);
// Iterate using the foreach loop. Note the orderings.
showa($a1);
showa($a2);
showa($a3);
showa($a4);
showa($a5);
// Iterate using "traditional" for loop. Note some missing values.
showb($a1);
showb($a2);
showb($a3);
showb($a4);
showb($a5);
// The print_r function will print out all of the contents of a PHP
// array.
print_r($a1);
echo "<br/>\n";
print_r($a2);
echo "<br/>\n";
print_r($a3);
echo "<br/>\n";
print_r($a4);