Fatal error: [] operator not supported for strings

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I'm getting information from database, saving it in array and echoing it in a form with loop structure and I'm having problems when I try to save the modified information to database.

I'm getting this error:

Fatal error: [] operator not supported for strings in....

Code:

$namesql1 = "SELECT name,date,text,date2 FROM table WHERE something= '$something'";
$nameresult1 = mysql_query($namesql1);
$countrows = mysql_num_rows($nameresult1);
while ($row = mysql_fetch_array($nameresult1, MYSQL_ASSOC)) {
    $name[] = $row['name'];
    $date[] = $row['date'];
    $text[] = $row['text'];
    $date2[] = $row['date2 '];
}

/** SOME CODE HERE **/

    
$wrotesql = "UPDATE service_report SET  name ='$name' , $date = '$date',$text = '$text[$nro]', ser_date = '$date2[$nro]' WHERE something = '$something')";

$wroteresult = mysql_query($wrotesql);

Could somebody please give me a hint what I'm doing wrong?

Answers

You get this error when attempting to use the short array push syntax on a string.

For example, this

$foo = 'foo';
$foo[] = 'bar'; // ERROR!

I'd hazard a guess that one or more of your $name, $date, $text or $date2 variables has been initialised as a string.

Edit: Looking again at your question, it looks like you don't actually want to use them as arrays as you're treating them as strings further down.

If so, change your assignments to

$name = $row['name'];
$date = $row['date'];
$text = $row['text'];
$date2 = $row['date2'];

It seems there are some issues with PHP 7 and code using the empty-index array push syntax.

To make it clear, these work fine in PHP 7+

$previouslyUndeclaredVariableName[] = 'value'; // creates an array and adds one entry

$emptyArray = []; // creates an array
$emptyArray[] = 'value'; // pushes in an entry

What does not work is attempting to use empty-index push on any variable declared as a string, number, object, etc, ie

$declaredAsString = '';
$declaredAsString[] = 'value';

$declaredAsNumber = 1;
$declaredAsNumber[] = 'value';

$declaredAsObject = new stdclass();
$declaredAsObject[] = 'value';

All result in a fatal error.

Friday, October 28, 2022

simmeringc-b68c7856fe7f

I would say just build it yourself. You can set it up like this:

$query = "INSERT INTO x (a,b,c) VALUES ";
foreach ($arr as $item) {
  $query .= "('".$item[0]."','".$item[1]."','".$item[2]."'),";
}
$query = rtrim($query,",");//remove the extra comma
//execute query

Don't forget to escape quotes if it's necessary.

Also, be careful that there's not too much data being sent at once. You may have to execute it in chunks instead of all at once.

Saturday, November 5, 2022

klas_lindbäck

You may have used this variable $w_custom_font1_src as a string somewhere else in the program.

So now reinitialize as an array

 $w_custom_font1_src =  array();

Tuesday, October 11, 2022

chris_livdahl

you fill the array $emails_list[] in the second while with $contacts2["email"]. in the next line, you implode the array to a string.

for the next result (first while loop) $emails_list is a string. now you can't convert a string to an array

try this:

        $emailsListData = array();
        while($contacts2=mysql_fetch_array($rs2))
        {
            //generate the list of emails address in an array
            $emailsListData[] = $contacts2["email"];
        }
        $emails_list = implode(',',$emailsListData);

Saturday, October 15, 2022

daniel_dolz

The function you're looking for is find_in_set:

 select * from ... where find_in_set($word, pets)

for multi-word queries you'll need to test each word and AND (or OR) the tests:

  where find_in_set($word1, pets) AND find_in_set($word2, pets) etc

Wednesday, August 17, 2022

thecontstruct

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Fatal error: [] operator not supported for strings

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