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PHP provides a function called empty($var), which tests if $var is "empty." Empty has an odd definition, since the function returns true if the variable loosely equates to False. Although a zero-length string would be considered empty, so would the string "0" (among other irrelevant values).
To accept the value "0" from a field, use strlen($var). It tests the length of any variable, after casting it to a string. If this function truly equals integer zero (compared with triple-equals), the variable must be empty.
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Php Source code for validation?
If you wish to check the syntax of your source code, you need to run the code through the PHP CLI with the -l option. There are also some online resources to validate the syntax. This will check only the syntax of your file. This will not however detect runtime errors or logic errors. You must absolutely run the script for the best possible code validation.
What is new in PHP?
PHP is a recursive acronym for "PHP: Hypertext Preprocessor" created by The PHP Group. PHP is a widely used server-side scripting language and the general purpose of PHP is to create dynamic Web Pages. For more information, visit the PHP website.
What is php fullform?
"PHP: Hypertext Preprocessor".
How do you add a comment in PHP?
< ?php // This is an example of comment in PHP /* This is another example of comment in PHP and we can write comments in multiple lines using this method */ ? >
What is the full form of PHP?
PHP: Hypertext Preprocessor is the full name of PHP. It originally stood for Personal Home Page. This was changed in 1997 with the release of PHP 3.
