It packs data into a binary string

Example

<?php
echo pack(“C8”,80,72,80,67,79,68,69,83);
?>

Output

PHPCODES

It sets whether a remote client can abort the running of a script

Example

<?php
ignore_user_abort(true);
?>

It outputs a string with the PHP syntax highlighted

Example

<?php
highlight_string(“<?php echo ‘phpcode’ ?>”);
?>

It outputs a file with the PHP syntax highlighted

Example

<?php
highlight_file(“index.php”);
?>

It halts the compiler execution

Example

<?php
__halt_compiler();
?>

It returns the capabilities of the user’s browser

Example

<?php
echo “<pre>”;
print_r( get_browser(null,true));
?>

It output a message and terminate the current script

Example

<?php
$fp = fopen($site,”r”) or exit(“Failed”);
?>

Output

phpcode

It evaluates a string as PHP code.

Example

<?php
$lan = “phpcode”;
$text = ‘$lan’;
eval(“$value = “$text”;”);
echo $value;
?>

Output

phpcode

Its an  alias of the exit() and prints a message and exits the current script

Example

<?php
$fp  =   fopen(“test.xml”,”r”) or die(“Failed”);
?>

It checks whether a given named constant exists

Example

<?php
echo defined(“LAN”)?LAN:”Not defined”;
?>

Output

Not defined