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PHP Empty() Function
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PHP empty() string function
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PHP empty: How to Check If the Variable is Empty or Not
Support for php stan types (for example non-empty-string) · Issue #2152 · bmewburn/vscode-intelephense · GitHub
PHP empty function with 3 examples
PHP – empty() Explained – Tech Geek Galaxy
PHP - How to Check if String is Empty?
PHP empty function with 3 examples
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is_null function in PHP
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0' as a string with empty() in PHP - Stack Overflow
PHP Empty() Function
How to check whether a String is empty in PHP
