Zend Certified PHP Engineer (ZCPE) Practice Test

The function that is used to convert a string to an array is `explode()`. This function takes a delimiter and a string as input, and it splits the string at each occurrence of the delimiter. The result is an array of strings, with each element corresponding to a segment of the original string that was separated by the delimiter.

For example, if you have a string such as "one,two,three" and you want to convert it into an array of words, you would call `explode(',', 'one,two,three')`. The output would be an array containing ["one", "two", "three"].

The other options do not serve the purpose of converting a string to an array in the same manner. `implode()` does the reverse of what `explode()` does; it takes an array and joins its elements into a single string using a specified delimiter. The function `split()` is actually deprecated as of PHP 5.3.0 and was used to split strings based on a regular expression, but is not typically used for simple delimiter-based string conversions. `array_split()` is not a built-in PHP function and does not exist in the PHP language, making it unrelated to the task of converting strings to arrays.

Understanding