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hello in this video we will see how we can remove the white space or space from both side of the string in the PHP so letamp;#39;s take an example we are having a variable like VAR and we are having a string like Aman this is the string we are having and if we Echo this we can see this string is perfectly visible and out and output is properly fine okay so letamp;#39;s suppose we count the characters of this particular string letamp;#39;s see as you can see we are having the 11 characters in this particular string so if we count it is particular 11 character so suppose we are having the white space at end of the string and also at the beginning of the string so right now this string may have 13 characters letamp;#39;s see okay as you can see right now this string are having 13 character with the white space here at this beginning at the end but sometimes we want to filter a string such that it removes the white space from both of it ends such that we are creating a password system