How to quickly create arrays through range () and compact () by PHP
Editor to share with you how PHP through range () and compact () to quickly create arrays, I believe that most people do not know much, so share this article for your reference, I hope you can learn a lot after reading this article, let's go to know it!
Quickly create through range () and compact ()
/ / range () quickly create a subscript continuous index array / * * range () function * array range (mixed $start, mixed $limit [, number $step=1]) * description: create a subscript continuous index array containing specified range units * start: the first value of the sequence * limit: the value that the sequence ends with limit * step: if the value of step is given, it will be used as the step value between cells if not specified Default is 1 * * add: * string chr (int $value): convert numbers as ASCII into characters * int ord (string $value): ASCII * / $arr = range (1,5) of the output characters Print_r ($arr); / / Array ([0] = > 1 [1] = > 2 [2] = > 3 [3] = > 4 [4] = > 5) $arr = range ('await,' baked,'c'); print_r ($arr); / / Array ([0] = > a [1] = > b [2] = > c) echo chr (90), "\ n"; / / Zecho ord ('z'), "\ n" / / 122//compact () quickly create associative arrays / * * compact () function * array compact (mixed $varname [, mixed $...]) * description: create an array, including variable names and their values * * add: * list ($var1, $var2...): assign the values in the array to some variables * / $username = 'zhao';$age =' 22 variables $arr = compact ('username',' age', 'email'); / / generate associative array / / Array quickly by putting existing variable names in the function ([username] = > zhao [age] = > 22 [email] = > wangzhao_hb@126.com) print_r ($arr); list ($a, $b, $c) = array (1, 2, 3)
The value of echo "an is {$a}, the value of b is {$b}, the value of c is {$c}", "\ n"; / / an is 1, b is 2, c is 3
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