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How to validate an email address in PHP

...k out this list for tests (both failed and succeeded) of the regex used by PHP's filter_var() function. Even the built-in PHP functions, email clients or servers don't get it right. Still in most cases filter_var is the best option. If you want to know which regex pattern PHP (currently) uses to ...
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Escaping single quote in PHP when inserting into MySQL [duplicate]

...se strings (in both snippets) with mysql_real_escape_string(). http://us3.php.net/mysql-real-escape-string The reason your two queries are behaving differently is likely because you have magic_quotes_gpc turned on (which you should know is a bad idea). This means that strings gathered from $_GET,...
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Create a CSV File for a user in PHP

...ment; filename=file.csv"); function outputCSV($data) { $output = fopen("php://output", "wb"); foreach ($data as $row) fputcsv($output, $row); // here you can change delimiter/enclosure fclose($output); } outputCSV(array( array("name 1", "age 1", "city 1"), array("name 2", "age 2", "c...
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How to convert string to boolean php

...uate to boolean true unless they have a value that's considered "empty" by PHP (taken from the documentation for empty): "" (an empty string); "0" (0 as a string) If you need to set a boolean based on the text value of a string, then you'll need to check for the presence or otherwise of that val...
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Parsing a string into a boolean value in PHP

Today I was playing with PHP, and I discovered that the string values "true" and "false" are not correctly parsed to boolean in a condition, for example considering the following function: ...
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is_file or file_exists in PHP

...xists in directory or false if file not exists as I check in 2020 might be php version update it – heySushil Mar 29 at 16:43 add a comment  |  ...
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PHP: Count a stdClass object

...od works, I would not use it for implementation because future versions of PHP could cause this code to break, I much prefer Alan Strom's answer. – ars265 Jul 14 '13 at 12:32 ...
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How to identify server IP address in PHP

How can I identify the server IP address in PHP? 15 Answers 15 ...
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PHP expresses two different strings to be the same [duplicate]

...and 272E-3063 will both be float(0) because they are too small. For == in php, If you compare a number with a string or the comparison involves numerical strings, then each string is converted to a number and the comparison performed numerically. http://php.net/manual/en/language.operato...
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How to properly URL encode a string in PHP?

...h page, where you type a search query and the form is submitted to search.php?query=your query . What PHP function is the best and that I should use for encoding/decoding the search query? ...