Maybe this is stupid question but I don't understand what is going on with the length of variable, what is happening in each step?
$text = 'John';
$text[10] = 'Doe';
echo strlen($text);
//output will be 11
Why will var_dump($text)display string(11) "John D"? Why will it not be a full name John Doe?
Can someone explain this moment?
// creates a string John
$text = 'John';
// a string is an array of characters in PHP
// So this adds 1 character from the beginning of `Doe` i.e. D
// to occurance 10 of the array $text
// It can only add the 'D' as you are only loading 1 occurance i.e. [10]
$text[10] = 'Doe';
echo strlen($text); // = 11
echo $text; // 'John D`
// i.e. 11 characters
To do what you want use concatenation like this
$text = 'John';
$text .= ' Doe';
If you really want all the spaces
$text = 'John';
$text .= ' Doe';
Or maybe
$text = sprintf('%s %s', 'John', 'Doe');
Strings can be accessed as arrays, which is what you're doing with $text[10]. Because of the internal workings, all $text[10] = 'Doe'; does is set the 11th character to 'D'.
You will have to use some other kind of string concatenation.