PHP remove array if subarray empty

问题

my array image just like this, if subarray "name" is empty or null i want delete array, how to do that ?

here's my array

here my current script

    $data       = array();
    $fixedData  = array();
    $countyName = array();
    $numrow = 2;
    echo "<pre>";
    // insert to tb participant => 1
    foreach($sheet as $key => $row){
    $data[] = array(
            'name' => $this->split_name($row['B']),
            'phone' => $row['D'],
            'mobile' => $row['E'],
            'institution' => $row['F'],
            'departement' => $row['G'],
            'address' => $row['H'],
            'country' => $row['I'],
    );

      $numrow++; 
    }
    unset($data[0]); //delete first row
    $data = array_values($data);

    //loop search data 

    var_dump ($data);
    die();

回答1:

Assume that you have the following data set,

$array = [
    [
        'name' => 'not null', 'phone' => 12546
    ],[
        'name' => '', 'phone' => 852147
    ],[
        'name' => null, 'phone' => 96325874
    ],[
        'name' => 'have value', 'phone' => 12546
    ],
];

You can filter the nulled or empty values like several ways :

foreach ($array as $key => &$value) {
    if (empty($value['name']) || is_null($value['name'])) {
        $value = null;
    }
}

$array = array_filter($array);

$newData = [];
foreach ($array as $key => $value) {
    if (!empty($value['name']) && !is_null($value['name'])) {
        $newData[] = $value;
    }
}

3- using array_walk

$newData = [];
array_walk($array, function ($value, $key) use (&$newData) {
    if (!empty($value['name']) && !is_null($value['name'])) {
        $newData[] = $value;
    }
});

4- using array_filter

$newData = array_filter($array, function ($value) {
    if (!empty($value['name']) && !is_null($value['name'])) {
        return $value;
    }
});

回答2:

<?php

$data       = array();
$fixedData  = array();
$countyName = array();
$numrow = 2;
echo "<pre>";
// insert to tb participant => 1
foreach($sheet as $key => $row){

    if($this->split_name($row['B'])!=='' && $this->split_name($row['B'])!==NULL){
        $data[] = array(
            'name' => $this->split_name($row['B']),
            'phone' => $row['D'],
            'mobile' => $row['E'],
            'institution' => $row['F'],
            'departement' => $row['G'],
            'address' => $row['H'],
            'country' => $row['I'],
        );
        $numrow++;
    }

}



//loop search data

var_dump ($data);
die();

I simple put an if condition inside your loop so you can check if your value is null or empty and if it is then you don't fill your new array. Also moved your counter inside the if so you increment it only in a success array push

A more "elegant" way for your if condition is this as well:

if (!empty($this->split_name($row['B'])) && !is_null($this->split_name($row['B'])))

来源：https://stackoverflow.com/questions/52091595/php-remove-array-if-subarray-empty

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