Golden drums ringing together - what day is the first day of August
The PHP is_array() function is used to determine whether a variable is an array. Its syntax format is as follows: bool is_array (mixed $var) If the parameter var is an array, it returns true; otherwise, it returns false. An example of using this function is as follows: <? php $a = array("…
PH
PHP is_array(): Determine whether it is an array
The opportunity will not wait for you. It may not happen again after you miss it.
PH
PHP arsort(): sort the array (in descending order) and maintain the index relationship
We are not very powerful people. There are too many things we can't keep. Just try our best
PH
PHP array_keys(): Get the key name in the array
I have a light, but it's dark and bright and dark
PH
PHP shuffle(): Randomly disrupt the order of array elements
The PHP shuffle() function is used to randomly disrupt the order of array elements. Its syntax is as follows: bool shuffle (array&$arr) parameter arr represents an array. After the shuffle() function is called, the order of arr array elements will be disturbed. Return value: TRUE on success
