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The trim() function removes whitespace characters from the beginning and end of a string on default settings, but can also remove other characters if specified. This is often done to improve security, especially when dealing with mySQL databases, which are up in the ranks with Java applets as things that a baby could hack, when not protected properly. Quotation marks, angle brackets, ampersands, and whitespace. If $length is greater than one, an array is returnedĪdding and Removing Special Characters These functions are used to add and remove special characters, such as slashes,. Default is one, so it splits a string into every character int $length: The length of each array element. string $to_split: The string you want to split into an array. The str_split function takes a string to turn into an array, and splits the string into an array, with each of the characters being a separate character. Toyota, BMW, Honda, Mercedes, Bugatti, Lamborghini, Acura, Porsche $string=implode(", " $array) //Implode the array into a string, split by the delimiter ", " A string of all the array elements joined together. $array exploded: The array of strings that you want to join by the delimiter. If unspecified, default "", or empty string. string $delimiter: The character that you want the array element to be joined by. It converts an array into a string, with each array element separated by a delimiter. The implode function does the exact opposite of the explode function. If the delimiter does not exist, and the limit is negative, it will return an empty array. If the delimiter does not exist, and limit is positive, it will return an array with the original string. If the delimiter exists in the string, it will return an array of strings 
If it is negative, it will return the maximum number of substrings minus the number specified in $limit. If the limit is unspecified the function will return all of the substrings possible. Int $limit: the maximum amount of substrings you want the original string split into. String $toexplode: The original string that you want to turn into an array. String $delimiter: What character you want to split the string by. Syntax: Array explode(string $delimiter, string $toexplode, ).
The explode function splits a string by a given delimiter and returns an array with all the substrings between the delimiters Please note that delimiters can be any character, these are simply the most common ones.Īrray String Functions These functions are used to convert strings to arrays, and vice-versa Delimiters are special characters used to separate parts of a string.When at all possible, use triple equals(=) with these functions, as some may return more than one type.The word before the function name denotes the default return type, e.g.The square brackets denote an optional parameter.It will include proper usage, a description of what the function does, as well as what the function returns under normal circumstances. This will act as more of a reference than a complete tutorial, as there are many functions to cover. These functions include trimming whitespace, properly escaping strings for security, splitting strings, and many more. String functions are built-in language constructs and functions that are designed to manipulate and display strings.
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