is there a function to add forward slashes before " inverted commas in a string

Question

I am using PHP, i want to display a string which comes as title of a post, in a textbox as value. if this title has inverted commas then the string value tag of input field terminates on that quote. now as there is an add slash function to add back slashes, is there a similar function to add forward slashes ? but just before quotes, and not any other character

Answer 1

Use the htmlspecialchars function to encode the string within the value="..." attribute.

Example:

$sometext = 'Hello "world"!';
echo '<input type="text" value="' . htmlspecialchars($sometext) . '" />';
// outputs <input type="text" value="Hello &quot;world&quot;!" />

Answer 2

As I understand, you are trying to put some text into an HTML <input type="text /> ?

If yes, you'll need to use the htmlspecialchars function ; for instance :

echo '<input type="text" name="my_element" value="'
    . htmlspecialchars($value, ENT_COMPAT, 'UTF'8) 
    . '" />';

Note that you have to specify a charset, if you are not working in ISO-8859-1.

With this function (quoting) :

• '&' (ampersand) becomes '&'
• '"' (double quote) becomes '"' when ENT_NOQUOTES is not set.
• ''' (single quote) becomes ''' only when ENT_QUOTES is set.
• '<' (less than) becomes '<'
• '>' (greater than) becomes '>'

Answer 3

You can use preg_replace, but what do you want to achieve with forward slashes?

preg_replace('/\"/', '/\"', $string);