The timeline below displays how wordpress function backslashit has changed across different WordPress versions. If a version is not listed, refer to the next available version below.
/**
* Adds backslashes before letters and before a number at the start of a string.
*
* @since 0.71
*
* @param string $value Value to which backslashes will be added.
* @return string String with backslashes inserted.
*/
function backslashit($value)
{
if (isset($value[0]) && $value[0] >= '0' && $value[0] <= '9') {
$value = '\\\\' . $value;
}
return addcslashes($value, 'A..Za..z');
}/**
* Adds backslashes before letters and before a number at the start of a string.
*
* @since 0.71
*
* @param string $string Value to which backslashes will be added.
* @return string String with backslashes inserted.
*/
function backslashit($string)
{
if (isset($string[0]) && $string[0] >= '0' && $string[0] <= '9') {
$string = '\\\\' . $string;
}
return addcslashes($string, 'A..Za..z');
}