I need to remove the brackets "[" and "]" from $widget_text
in the variable value below and store the result in $widget_id
.
$widget_text = '[widget_and-some-text]'; $widget_id = ?;
Use preg_replace
, str_replace
or something else?
You can also remove a specified character or substring from a string by calling the String. Replace(String, String) method and specifying an empty string (String. Empty) as the replacement. The following example removes all commas from a string.
You can remove a character from a Python string using replace() or translate(). Both these methods replace a character or string with a given value. If an empty string is specified, the character or string you select is removed from the string without a replacement.
There are several methods available, and they can sometimes be made to perform exactly the same task, like preg_replace/str_replace. But, perhaps you want to remove brackets only from the beginning or end of the string; in which case preg_replace works. But, if there could be several brackets, preg_replace can do the job too. But trim is easier and makes more sense.
preg_replace() - removes beginning and trailing brackets
$widget_id = preg_replace(array('/^\[/','/\]$/'), '',$widget_text);
str_replace() - this removes brackets anywhere in the text
$widget_id = str_replace(array('[',']'), '',$widget_text);
trim() - trims brackets from beginning and end
$widget_id = trim($widget_text,'[]')
substr() - does the same as trim() (assuming the widget text does not include any closing brackets within the text)
$widget_id = substr($widget_text, $start = strspn($widget_text, '['), strcspn($widget_text, ']') - $start );
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