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  2. PHP array broken? $output=''; $output['id']

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PHP array broken? $output=''; $output['id']

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2021-12-6
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Solution:

Yes, there is a backward incompatible change which says that since php7.1

writing to an out of range offset pads the string with spaces, where non-integer types are converted to integer, and only the first character of the assigned string is used. Formerly (that is in ph7.0), empty strings where silently treated like an empty array.

More information with example here: https://www.php.net/manual/en/migration71.incompatible.php#migration71.incompatible.empty-string-modifcation-by-character.

And you should also answer the question from comments - if you treat$output as array, then why$output is defined asstring?

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2021-12-6
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PHP (from the English Hypertext Preprocessor - hypertext preprocessor) is a scripting programming language for developing web applications. Supported by most hosting providers, it is one of the most popular tools for creating dynamic websites. The PHP scripting language has gained wide popularity due to its processing speed, simplicity, cross-platform, functionality and distribution of source codes under its own license.
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