PHP gets a multidimensional array of specified values in the array of the first few columns

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PHP gets a multidimensional array of specified values in the array of the first few columns

Main use:

Array_column

Array_search

<?php$user = Array (      0 = = Array (          ' id ' =    = 1,          ' name ' = '  Zhang San ',          ' email ' = = ') Zhangsan@qq.com ',      ),      1 = = Array (          ' id '    = + 3,          ' name '  = ' John Doe ',          ' email ' + = ' lisi@qq.com ',      ),      2 = = Array (          ' id '    = + 5,          ' name ' = '  Harry ',          ' email ' = ' = ') Wangwu@qq.com ',      ));  Print_r (Array_column ($user, ' id '));? >

Print_r will output the following fields

Array
(
[0] = 1
[1] = 3
[2] = 5

)

Then get the position of the corresponding value according to the Array_search function

Detailed function descriptions can be viewed in manuals or corresponding articles