Why a function checking if a string is empty always returns true? [closed]

Why a function checking if a string is empty always returns true? [closed]

php string validation

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Better way to check variable for null or empty string?

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Easy way to test a URL for 404 in PHP?

php http validation http-headers http-status-code-404

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A non well formed numeric value encountered

php validation date time

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Checking if form has been submitted - PHP

php forms validation

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PHP validation/regex for URL

php regex url validation

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How can I manually return or throw a validation error/exception in Laravel?

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Laravel: Validation unique on update

php validation laravel laravel-4

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Checking if all the array items are empty PHP

php arrays validation

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Add error to Symfony 2 form element

php validation symfony symfony-forms

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Laravel update model with unique validation rule for attribute

php laravel validation eloquent

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PHP: Best way to check if input is a valid number?

php input validation numeric

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Function to check if a string is a date

php regex validation date datetime

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What is the best way to validate a credit card in PHP?

php validation e-commerce numbers credit-card

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How to check if a string is base64 valid in PHP

php validation base64

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