Is zero considered empty php?
(PHP 4, PHP 5, PHP 7, PHP 8) Show empty — Determine whether a variable is empty Descriptionempty(mixed Parametersvar Variable to be checked No warning is generated if the variable does not exist. That means empty() is essentially the concise equivalent to !isset($var) || $var == false. Return Values Returns ExamplesExample #1 A simple empty() / isset() comparison.
Example #2 empty() on String Offsets
The above example will output: bool(true) bool(false) bool(false) bool(false) bool(true) bool(true) Notes
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Nanhe Kumar ¶ 8 years ago
$testCase as $k => $v) { Janci ¶ 13 years ago
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$testCase as $key => $case ) {
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$testCase as $k => $v) { GazetteSDF ¶ 4 years ago
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$a['key'])?'A empty':'A not empty'), ' - ', (empty($b['key'])?'B empty':'B not empty'), ' - ', (empty($c['key'])?'C empty':'C not empty'), ' - ', (empty($d['key'])?'D empty':'D not empty'); xzero at elite7hackers dot net ¶ 5 years ago
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class EmptyClass { Is 0 considered empty?"0" is considered as no value or empty value.
Is null the same as 0 in PHP?NULL essentially means a variable has no value assigned to it; false is a valid Boolean value, 0 is a valid integer value, and PHP has some fairly ugly conversions between 0 , "0" , "" , and false . Show activity on this post.
Is 0 an integer PHP?PHP converts the string to an int, which is 0 (as it doesn't contain any number representation).
How check if PHP is empty?Answer: Use the PHP empty() function
You can use the PHP empty() function to find out whether a variable is empty or not. A variable is considered empty if it does not exist or if its value equals FALSE .
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