How to use negative limit of explode in php

This article is about how to use negative limit of explode in php. The editor thinks it is very practical, so share it with you as a reference and follow the editor to have a look.

The specific analysis is as follows:

Explode-use one string to split another string into an array.

The parameters are:

Array explode (string separator, string string [, int limit])

The final limit can not be filled, then all the string will be split according to the separator separator; if limit is positive, it will be divided into (limit+1) numbers from left to right; if it is negative, limit array elements will be removed from the right (the parameter is negative, starting from php5.1), leaving the rest to form an array.

Such as:

$str= "1 2 3 4 5 6"; print_r (explode ("", $str,-2))

You will see:

Array ([0] = > 1 [1] = > 2 [2] = > 3 [3] = > 4)

It can be seen that 5 and 6 elements have been deleted.

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