![]() ![]() For example, the following code returns an empty string because our delimiter is an integer value. Typically errors for this function are due to an invalid data type given as a parameter. If the function fails to perform as expected it will return NULL. Errors and Exceptions for Implode() Function If our source array is empty or contains only a single value, the return value will be the same as the first value in the $sourceArray parameter. The function only returns strings, therefore if the source array contains values that are not strings the function will cast those types to strings before concatenation. The return value of the function is a combined string of each element in the source array merged together. Elements will be combined in the same order as the array. If you provide an empty array the result will be an empty string. This is the source array we want to convert into a combined string using the given delimiter. The space after the comma is important to add as the function will replace spaces with nothing essentially creating additional delimiters. In the example below we use the string ‘, ’. This can be any strings of characters of our choosing. We pass in a separator string to split up our combined string by. The second parameter is the source array which is mandatory in order for us to concatenate any all array element values. The first parameter is the delimiter that we use to split up our string and is a mandatory parameter. The second use case is when we are concatenating multiple string values into a larger string. The implode function is also useful for debugging purposes by allowing us to print out each element in an array in a human-readable manner. Often times implode() is used to prepare data for database insertion given most database systems do not allow for arrays to be inserted. The PHP implode() function is used to merge elements from an array into a single string with a character of our choosing as the delimiter. ![]() ![]() PHP Implode() Function Introduction & Syntax We'll walk through various implementations and examples that show how this function can be used in a production setting. If you don’t specify a separator, explode() won’t work as expected.We're going to take a look at how we can use the implode() function to join array elements together into a single string. Note that unlike implode() which works without the separator, the separator is very important in explode(). This article showed you how to use the explode() function in PHP. You can see that HTML and PHP got ptinted together because there was no space between them. If you type two different words together, they are treated as one: $str = "CSS HTMLPHP Java JavaScript" The explode() function looks at spaces in the string to split the string into an array. The index is not more than the limit of 2 specified. You can see that the first element takes an index of 0 and the rest of the comma-separated elements take 1. $str = "CSS, HTML, PHP, Java, JavaScript" For example, if you specify 2, all the strings would show, but the index won’t be more than 2. If you specify a limit in the explode() function, the index(es) won’t be more than that number. We are printing an array, so we can use print_r() Remember that arrays use zero-based indexing. If the string is passed into an explode() function, Hello takes an index of 0 in the array, and World takes an index of 1. Let's say that I have the string "Hello World". You can use the limit parameter to specify the number of arrays expected. So, just like the string split into an array, the separator is required. Unlike implode() which works even if the separator is not provided, the explode() function won’t work without the separator. The full syntax looks like this: explode(separator, string, limit) With the Implode () function, we can form one string by joining the elements of an array. In other words, the Implode () function in PHP helps in the formation of strings with the help of elements of the array. The explode() function takes in three parameters: The PHP implode function is considered to be the most popular function in PHP. Like the built-in imlode() function, the explode function does not modify the data (string). Each of the characters in the string is given an index that starts from 0. The PHP explode() function converts a string to an array.
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