array_push for multidimensional array

Question

I have an array as follows:

$sql_commands_to_run=    Array
    (
        [0] => ALTER TABLE `live`.`master_table3`]} {[ADD COLUMN `con` varchar(25) NULL;
        [1] => ALTER TABLE `live`.`master_table_2`]} {[MODIFY COLUMN `mobile2` varchar(15), ADD UNIQUE(`mobile2`);
        [2] => ALTER TABLE `live`.`master_table_2`]} {[MODIFY `type2` varchar(10)  NOT NULL;
        [3] => ALTER TABLE `live`.`master_table_2`]} {[MODIFY COLUMN `type2` varchar(10);
        [4] => ALTER TABLE `live`.`master_table_2`]} {[ADD COLUMN `email2` varchar(255);
    )

I want to merge the multiple alter queries into one query per table

Array
(
    [0] => ALTER TABLE `live`.`master_table3` ADD COLUMN `con` varchar(25) NULL;
    [1] => ALTER TABLE `live`.`master_table_2` MODIFY COLUMN `mobile2` varchar(15), ADD UNIQUE(`mobile2`),MODIFY `type2` varchar(10)  NOT NULL,MODIFY COLUMN `type2` varchar(10),ADD COLUMN `email2` varchar(255);
)

for that to happen I am trying to separate the table names with the modifications

Array(
['ALTER TABLE `live`.`master_table3`'] => Array(
                                            [0] => 'ADD COLUMN `con` varchar(25) NULL'
                                            ),
['ALTER TABLE `live`.`master_table_2`'] => Array(
                                                [0] => 'MODIFY COLUMN `mobile2` varchar(15)',
                                                [1] => 'ADD UNIQUE(`mobile2`)',
                                                [2] => 'MODIFY `type2` varchar(10)  NOT NULL',
                                                [3] => 'MODIFY COLUMN `type2` varchar(10)',
                                                [4] => 'ADD COLUMN `email2` varchar(255)'
                                                )                                       
)

here is what I am trying :

$merger = array();
foreach($sql_commands_to_run as $sql_command){            
            $temp_arr = explode("]} {[",$sql_command);            
            array_push($merger["'".$temp_arr[0]."'"],$temp_arr[1]);
        }

but I'm not good at arrays. Please, any help would be appreciated.

$merger[$temp_arr[0]][] = $temp_arr[1]; instead array_push — splash58
– splash58, Commented Nov 3, 2017 at 9:15
The source array that you have is a real mess, I can see roughly what you are trying to do but the data held in $sql_commands_to_run is far from ideal. Where does $sql_commands_to_run come from? Show us the code please — ajmedway
– ajmedway, Commented Nov 3, 2017 at 9:17
Why not just str_replace(']} {[', ' ', $sql_commands_to_run)? Oh I see, you want 1 query per table. — Don't Panic
– Don't Panic, Commented Nov 3, 2017 at 9:18

splash58 · Accepted Answer · 2017-11-03 09:18:30Z

2

Change line with array_push with

$merger[$temp_arr[0]][] = $temp_arr[1];

demo

answered Nov 3, 2017 at 9:18

splash58

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1 Comment

splash58 Over a year ago

Glad to help. Good luck!

symcbean · Accepted Answer · 2017-11-03 09:19:00Z

1

Don't use array_push() just set the value....

$merger = array();
foreach($sql_commands_to_run as $sql_command){            
        $temp_arr = explode("]} {[",$sql_command);            
        $merger[$temp_arr[0]][]=$temp_arr[1];
}

answered Nov 3, 2017 at 9:19

symcbean

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