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Filter Functions in PHP
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ValidationError: expected string or bytes-like object · Issue #35 · RonnyPfannschmidt/prance · GitHub
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Using PHP filter functions like filter_var_array() is there a way to check if length of an input string is less than some value - Stack Overflow
Error resulted in a string but the field is numeric use tonumber
What type of data type is a validate filter? : r/PHPhelp
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Felix Colibri- Delphi String Filter
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