Php trim full name9/9/2023 ![]() ![]() Parameter Requirement Description pattern Required Consists of a regular expression or an array of regular expressions. Preg_replace(pattern, replacement, input, limit, count) Parameters The preg_replace() function replaces all matches of a pattern or list of patterns within a string with substrings. On the other hand, preg_replace() function is the best for removing all whitespace in a string. The str_replace() function is the best for removal for just regular spaces. While regular space is just the ordinary space " ", whitespace comprise of all types of spaces including regular space, tabs, newlines, etc, as listed in the space characters' table. Regular space is different from whitespace. To remove all whitespaces, it's advisable to use the preg_replace() function as covered below. " "), inserted by pressing the keyboard space bar. These are spaces that appear regularly in between words in a string (ie. $str = "Hello to you! How are you today?" count Optional This parameter is a variable that stores the count of all replacements that have happened after the function has been executed.Īll we have to do is use the function to replace all the instances of regular space ( " ") with an empty string "". string Required Specifies the string that contains the text of characters to be replaced. replace Required Specifies the character or text to replace the match with. Parameter Requirement Description find Required Specifies the text or characters we want to replace. Str_replace(find,replace,string,count) Parameters The str_replace() function is an inbuilt PHP function used to replace all the occurrences of some characters with other characters in a string. To remove all the spaces in between words or characters in a string to remain with a compact block of text, use the str_replace() function. Rtrim() - Removes whitespace or other predefined characters from the right side of a string. Ltrim() - Removes whitespace or other predefined characters from the left side of a string. The ltrim() and rtrim() functions are the same to the trim() function, only that they specify one specific side in which the trim should happen instead of both ends. In this example we have specified in the second parameter that we want to remove the " " and "\t" characters. After removing the two spaces and checking the length again, you will notice that it has been reduced 2 characters after trimming. Initially, our string had a length of 14 characters. Since if we were to print/echo the string before and after trimming on the screen, you wouldn't easily notice the difference, I have used the string length as the way of confirmation. We then trimmed it and removed the two spaces. Initially, we had the string with a space at the beginning, and another at the end. ![]() If omitted, all the space characters are removed (refer to the space characters table at the top). Parameter Requirement Description string Required Specifies the string in which we want to trim charlist Optional Specifies which characters you want to be removed from the ends of the string. The trim() function removes whitespace and any other predefined characters from both ends of a string. ![]() To remove these spaces, we can use the PHP trim(), ltrim() or rtrim() functions. It is therefore advisable to trim these inputs before saving them in the database or using them for comparison. For instance, in registration or login forms, users may add spaces before or after their names, email, phone, etc, even without noticing which may result in errors. These spaces before and after the string are prone to originate with user inputs in forms. If you were to do a comparison between the two using either the equal operator = or the identical operator =, you would notice that they are treated as two totally different strings due to the leading space for the second string. It may seem nothing of a big deal but these strings are two totally different things. Spaces at the beginning or at the end of strings are in most cases added by mistake without even noticing and may result in errors while dealing with strings in your program.įor instance, a typing error may result in two strings, "hello world" and " hello world". "\v" Vertical tab "\0" Null character Removing spaces at the ends of the string ![]() It was used together with \n as \r\n to get to the beginning of the next line. "\r" This symbol is called a carriage return which means go to the start of the line. It marks the end of the line for the text that appears before it and makes the text after it to start in a new line. "\t" Horizontal tab "\n" This is newline (line feed) character. Space character Description " " Ordinary space. ![]()
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