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PHP5 Error message that is caused by attempting to assign a value to an array element of a variable that is declared as a string.
Example that generates error:
$foo='bar'; $foo[0]='bar';
Get error message Fatal error: Cannot use string offset as an array in ...
Explanation:
$foo was declared as a string in $foo='bar'.
$foo[0] is trying to append an element onto a string variable.
Example that does not generate error:
$foo[0]='bar'; $foo='bar';
Does NOT generate error.
Explanation:
$foo[0]='bar' instantiates variable $foo as array since it has not been instantiated. Then assigns 'bar' to element $foo[0].
$foo='bar' implicitly re-declares $foo as a string and assigns 'bar' to it.
Example that does not generate error:
$foo='bar'; $foo=array(); $foo[0]='bar';
Explanation:
$foo='bar' implicitly declares $foo as a string [gs variable] then assigns 'bar' as the value.
$foo=array() explicitly re-declares $foo as an [gs array].
$foo[0]='bar' can now be executed as $foo is declared as an array.
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