将数组数组值存储在一个逗号分隔的字符串中

Question

I have this return array

 $leaseArray =  Array ( [0] => Array ( [LeaseNumber] => OL/2011/0343 ) [1] => Array ( [LeaseNumber] => 184 ) [2] => Array ( [LeaseNumber] => OL/2011/0118 ) [3] => Array ( [LeaseNumber] => OL/2016/1759 ) [4] => Array ( [LeaseNumber] => OL/2013/0858 ) [5] => Array ( [LeaseNumber] => OL/2012/0535 ) [6] => Array ( [LeaseNumber] => OL/2017/2208 ) [7] => Array ( [LeaseNumber] => 2355 ) )

I want to save all the values of LeaseNumber in to one comma separated string like $string = "OL/2011/0343 , 184 , OL/2011/0118 , OL/2016/1759"

please help me

$lease = array();
        for($i=0;$i<=count($leaseArray); $i++){
            $lease = $leaseArray[$i]['LeaseNumber'];
        }

Answer 1

If you want a one-liner then this could work:

$csv = implode( ' , ', array_map( function( $a ){ return $a[ 'LeaseNumber' ]; }, $leaseArray ) );

expanded:

$csv = implode( ' , ', // step 2: implode on ' , ': space-comma-space
    array_map( // step 1: pass $lease array into array_map so that we can get a new array
        function( $a ){ return $a[ 'LeaseNumber' ]; }, // Accept each array in $a and only return the LeaseNumber. array_map will build a new array out of just these values
        $leaseArray // the array to be processed
    )
);

---

In essence, this is the same as:

$csv = implode( ' , ', array_column( $a, 'LeaseNumber' ) );

but array_map() allows you to transform the data before output/return if you need to.