w3resource

PHP: get_html_ translation_ table() function

Description

The get_html_translation_table() returns the translation table used by htmlspecialchars() function and htmlentities() function.

Version

(PHP 4 PHP 5 )

Syntax

get_html_translation_table(table, quote_style)

Parameters

Name Description Required /
Optional		 Type
table For a given string, two constants either HTML_ENTITIES or HTML_SPECIALCHARS, defines what kind of character to html entities mapping is to be done. Optional Integer
quote_style Refers to a style of encoding single and double quote.
ENT_COMPAT : Only convert double quotes, leaving single quotes unaltered. This is the default one.
ENT_QUOTES : Converts both single and double quotes.
ENT_NOQUOTES: Converts neither single nor double quotes. 		Optional Integer

Return values:

The translation table as an array.

Value Type: Array.

Pictorial Presentation

php-string-get_html_translation_table()

Example: 

<?phpprint_r (get_html_translation_table());echo '<br>';print_r (get_html_translation_table(HTML_ENTITIES));echo '<br>';print_r (get_html_translation_table(HTML_SPECIALCHARS,ENT_QUOTES));?>

Output:

Array  (      ["] => "      [<] => <      [>] => >      [&] => &  ) 
Array  (      [ ] =>        [¡] => ¡      [¢] => ¢      [£] => £      [¤] => ¤      [¥] => ¥      [¦] => ¦      [§] => §      [¨] => ¨      [©] => ©      [ª] => ª      [«] => «      [¬] => ¬      [­] => ­      [®] => ®      [¯] => ¯      [°] => °      [±] => ±      [²] => ²      [³] => ³      [´] => ´      [µ] => µ      [¶] => ¶      [·] => ·      [¸] => ¸      [¹] => ¹      [º] => º      [»] => »      [¼] => ¼      [½] => ½      [¾] => ¾      [¿] => ¿      [À] => À      [Á] => Á      [Â] => Â      [Ã] => Ã      [Ä] => Ä      [Å] => Å      [Æ] => Æ      [Ç] => Ç      [È] => È      [É] => É      [Ê] => Ê      [Ë] => Ë      [Ì] => Ì      [Í] => Í      [Î] => Î      [Ï] => Ï      [Ð] => Ð      [Ñ] => Ñ      [Ò] => Ò      [Ó] => Ó      [Ô] => Ô      [Õ] => Õ      [Ö] => Ö      [×] => ×      [Ø] => Ø      [Ù] => Ù      [Ú] => Ú      [Û] => Û      [Ü] => Ü      [Ý] => Ý      [Þ] => Þ      [ß] => ß      [à] => à      [á] => á      [â] => â      [ã] => ã      [ä] => ä      [å] => å      [æ] => æ      [ç] => ç      [è] => è      [é] => é      [ê] => ê      [ë] => ë      [ì] => ì      [í] => í      [î] => î      [ï] => ï      [ð] => ð      [ñ] => ñ      [ò] => ò      [ó] => ó      [ô] => ô      [õ] => õ      [ö] => ö      [÷] => ÷      [ø] => ø      [ù] => ù      [ú] => ú      [û] => û      [ü] => ü      [ý] => ý      [þ] => þ      [ÿ] => ÿ      ["] => "      [<] => <      [>] => >      [&] => &  ) 
Array  (      ["] => "      ['] => '      [<] => <      [>] => >      [&] => &  )

View the example in the browser

See also

PHP Function Reference

Previous: fprintf
Next: hebrev



PHP: Tips of the Day

PHP - How do I implement a callback in PHP?

The manual uses the terms "callback" and "callable" interchangeably, however, "callback" traditionally refers to a string or array value that acts like a function pointer, referencing a function or class method for future invocation. This has allowed some elements of functional programming since PHP 4. The flavors are:

$cb1 = 'someGlobalFunction';
$cb2 = ['ClassName', 'someStaticMethod'];
$cb3 = [$object, 'somePublicMethod'];

// this syntax is callable since PHP 5.2.3 but a string containing it
// cannot be called directly
$cb2 = 'ClassName::someStaticMethod';
$cb2(); // fatal error

// legacy syntax for PHP 4
$cb3 = array(&$object, 'somePublicMethod');

This is a safe way to use callable values in general:

if (is_callable($cb2)) {
    // Autoloading will be invoked to load the class "ClassName" if it's not
    // yet defined, and PHP will check that the class has a method
    // "someStaticMethod". Note that is_callable() will NOT verify that the
    // method can safely be executed in static context.

    $returnValue = call_user_func($cb2, $arg1, $arg2);
}

Modern PHP versions allow the first three formats above to be invoked directly as $cb(). call_user_func and call_user_func_array support all the above.

Notes/Caveats:

  1. If the function/class is namespaced, the string must contain the fully-qualified name. E.g. ['Vendor\Package\Foo', 'method']
  2. call_user_func does not support passing non-objects by reference, so you can either use call_user_func_array or, in later PHP versions, save the callback to a var and use the direct syntax: $cb();
  3. Objects with an __invoke() method (including anonymous functions) fall under the category "callable" and can be used the same way, but I personally don't associate these with the legacy "callback" term.
  4. The legacy create_function() creates a global function and returns its name. It's a wrapper for eval() and anonymous functions should be used instead.

Ref : https://bit.ly/2Zmqil0