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// output: x is 5, y is 7, z is 99, hello is World, 7 is Foo your coworkers to find and share information. site design / logo © 2020 Stack Exchange Inc; user contributions licensed under
定义和用法. There is no difference between them.Can't think of any. Implode will convert all numeric array elements to strings. it should be noted that an array with one or no elements works fine.
If you want to implode an array as key-value pairs, this method comes in handy. This function is an alias of: implode().
The implode() function returns a string from elements of an array. (2) First a side note - any of this does not matter in a real production application, as the time differences are superficial and the optimization of the application should be done in other places (dealing with network, database, filesystem, etc.). The return value after using the implode PHP function is a string, so you may assign it to a string variable.See the following examples for using the implode function with online demos and code. for example:
join() is an alias for implode(), so implode is theoretically more "PHP native" though there is absolutely no performance increase to be gained by using it. Having used Java for a long time my standard method for creating long strings piece by piece was to add the elements to an array and then implode the array.
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This is basically the same as the accepted answer. It's not obvious from the samples, if/how associative arrays are handled.
In short the reality is that in php, join() and implode() methods function the same way.One can be interchanged for the other as they work in the same way.Thanks for contributing an answer to Stack Overflow! It takes an array of strings and joins them together into one string using a delimiter (string to be used between the pieces) of your choice.
By clicking “Post Your Answer”, you agree to our To subscribe to this RSS feed, copy and paste this URL into your RSS reader. It is possible for an array to have numeric values, as well as string values. If you want to implode an array of booleans, you will get a strange result:
Join array elements with a glue string.. The $string_arr is the array that you want to convert into a string. implode() 函数返回一个由数组元素组合成的字符串。 注释：implode() 函数接受两种参数顺序。但是由于历史原因，explode() 是不行的，您必须保证 separator 参数在 string 参数之前才行。 注释：implode() 函数的 separator 参数是可选的。但是为了向后兼容，推荐您使用使用两个参数。 Private self-hosted questions and answers for your enterpriseProgramming and related technical career opportunitiesSo i can use any of the method. There are no performance advantages or disadvantages either way, so go with comprehensibility. join appends the delimiter to the last element while implode doesn't.What does this add to the thread?
Can also be used for building tags or complex lists, like the following:
Ask Question Asked 10 years, 5 months ago. The implode function in PHP is used to "join elements of an array with a string".
For consistency with explode(), however, it is …
PHP: many concats or one implode? They should theoretically work exactly the same. 3. However, for consistency with explode(), you should use the documented order of arguments. implode() can, for historical reasons, accept its parameters in either order. Although, using explode/implode has been shown to increase the awesomeness of your code by 10%I tested them in Benchmark and they are same in speed.
They both combine array elements into a string. However, it is recommended to always use two parameters for backwards compatibility. Thanks a lot.Is there any differences between question and your answer ?This should be the correct answer.
I test it now with a lot of array, and implode and join show the same time to execute. Free 30 Day Trial
You can use array_filter() to sort out null values. join() is an alias for implode(), so implode is theoretically more "PHP native" though there is absolutely no performance increase to be gained by using it.
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1. Note: The separator parameter of implode() is optional.
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