![]() The possibility has been raised of making ext/mbstring non-optional in future, although that is out of scope for the current discussion.Īn exact replacement is also straight-forward to implement in pure PHP, as long as performance is not critical. It also has an implementation entirely contained in the php-src git repository, whereas ext/intl and ext/iconv rely on external libraries, with ext/iconv particularly prone to platform-specific differences. It is also listed as a requirement for Drupal and phpBB, and recommended for WooCommerce.īy contrast, ext/iconv is required by only 6 (plus 4 via symfony/polyfill-iconv), and ext/intl by only 2. It is already required by 65 of the 1000 most popular packages on Packagist, including phpunit/phpunit and laravel/framework another 35 require symfony/polyfill-mbstring. Of these three extensions, ext/mbstring is probably the most commonly installed. The 'to_subst' option to Uconverter::transcode allows the closest match to utf8_decode, e.g. These vary slightly in the options available, particularly around invalid and unmappable UTF-8 input. Here you can see how the various JavaScript and PHP functions applyġ738 specifications make fascinating reading - considering that theĭocument is 10 years old yet still applicable.Ext/iconv: $utf8 = iconv ( 'ISO-8859-1', 'UTF-8', $latin1 ) and $latin1 = iconv ( 'UTF-8', 'ISO-8859-1', $utf8 ) They don't conflict with either the HTML or JavaScript quotes.įor more details on escaping PHP variables for use in JavaScript see #Php json decode unicode fails codeSo any quotes within the JavaScript code will need to be escaped so that In the HTML we use double-quotes and in the JavaScript single-quotes, onclick="return confirm('Delete this item: ?' ". To JavaScript is addslashes which will add a backslash before:įor example, to echo a PHP variable into JavaScript code. All functions have a complementary 'decode' function that pretty much does the opposite.Īnother essential PHP function that comes in handy when passing data.See our article on ASCII Character Codes for more details. The htmlentities function escapes characters which have special meaning inside HTML by inserting HTML entities in their place (eg.On the PHP side of things, the only difference beween urlencode and rawurlencode is that the latter escapes the character wheras urlencode uses the widely accepted + instead.The encodeURIComponent function is an extension of encodeURI, the difference being that it also escapes the following characters:, / ? : & = + $.The JavaScript escape function replaces most punctuation symbols with the equivalent hex-codes, but was found to be inadequate when it came to UNICODE character encoding and has been superseded by the encodeURI function.In the table futher down the page and described briefly here: These functions perform replacements on certain characters as shown The function you select will be applied to the INPUT text and not to already encoded (or decoded) text below. If you have a string toĭecode, use the buttons on the right instead. This page calls the PHPĪjax rather than a JavaScript emulation. Or URL parameters (following the '?' in a URL). Used to encode special characters when they appear in plain text The form below let's you see the output of various functions that are Encoding and decoding using JavaScript and PHP To be familiar with the PHP functions for encoding and decoding specialĬharacters, which is why we've created this special tool for testing andĬomparing different functions. If you're interacting between PHP and JavaScript you will also need Provides a number of functions that encode and decode special That mean something special such as identifying a variable, the end of a Every programming language has it's special characters - characters ![]()
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