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