How to store null value into array

Question

$array is this.First two index has null value.I want this null to be stored in array of $value. how to do this

Array
    (
        [ew-language__en] => 
        [ew-language__en__0__phrase__locale] => 
        [ew-language__en__1__phrase__use_system_locale] => 1
        [ew-language__en__2__phrase__decimal_point] => .
        [ew-language__en__3__phrase__thousands_sep] => ,
        [ew-language__en__4__phrase__mon_decimal_point] => .
        [ew-language__en__5__phrase__mon_thousands_sep] => ,
        [ew-language__en__6__phrase__currency_symbol] => $
        [ew-language__en__7__phrase__positive_sign] => 
        [ew-language__en__8__phrase__negative_sign] => -
        [ew-language__en__9__phrase__frac_digits] => 2
        [ew-language__en__10__phrase__p_cs_precedes] => 1
        [ew-language__en__11__phrase__p_sep_by_space] => 0
        [ew-language__en__12__phrase__n_cs_precedes] => 1
        [ew-language__en__13__phrase__n_sep_by_space] => 0
        [ew-language__en__14__phrase__p_sign_posn] => 3
        [ew-language__en__15__phrase__n_sign_posn] => 3
        [ew-language__en__16__phrase__time_zone] => US/Pacific
        [submit] => SAVE VALUE INTO XML FILE
    )

foreach ($array as $key => $value)
                 {//some code}

i want this $value to include null values also

simply you can do like [ew-language__en__0__phrase__locale] => null, — Helping Hands
– Helping Hands, Commented May 25, 2015 at 5:50
this array is getting values dynamically from xml file where value=" " it displays like this i can't do it like this. — User4834426
– User4834426, Commented May 25, 2015 at 5:52
Then you can use xml property to set null value in xml and then you can bind here , like <PropName xsi:nil="true"> Reference here : docs.intersystems.com/ens20121/csp/docbook/… — Helping Hands
– Helping Hands, Commented May 25, 2015 at 5:55

Drakes · Accepted Answer · 2015-05-25 06:14:40Z

3

Normally, like this:

Array(
    "[ew-language__en]" => null
)

Now, you have just mentioned that you are getting these values dynamically from xml file where value=" ". You can then do:

foreach ($array as $key => $value) {
    if ($value == "" || ctype_space($value) ) {
        $array[$key] = null;
    }
}

If the array[key] is empty or only has whitespace, it will be converted to null.

Ref: ctype_space

edited May 25, 2015 at 6:14

answered May 25, 2015 at 5:50

Drakes

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3 Comments

User4834426 Over a year ago

this array is getting values dynamically from xml file where value=" " it displays like this i can't do it like this.

Drakes Over a year ago

Given this new information, Helping Hands has good solution for XML

Drakes Over a year ago

@Rozeena Here is the exact function you can use

Sougata Bose · Accepted Answer · 2015-05-25 05:57:11Z

1

Use a loop then -

foreach ($array as $key => $value)
{
    if(check_condition_to_set_null) $array[$key] = null;
}

answered May 25, 2015 at 5:57

Sougata Bose

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Comments

Matthew B · Accepted Answer · 2015-05-25 05:59:13Z

1

If you're puling files dynamically from an XML file, Drake's answer won't work as it treats the value of the key as the string literal "null". Instead, what you can do, is create a string literal then replace it with a null when you load the array.

In your XML:

<ew-language__en__0__phrase__locale>NULL</ew-language__en__0__phrase__locale>

In your PHP, when you load the array:

foreach ($array as $key => $value) {
if ($array[$key] == "NULL") {
$array[$key] = null;
}
}

answered May 25, 2015 at 5:59

Matthew B

848 bronze badges

2 Comments

Drakes Over a year ago

See, we didn't know this was even related to XML until the comments ;)

Matthew B Over a year ago

@Drakes Yep, nothing against you. Yours is the simplest solution :)

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