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Check if $_POST exists

...ugustus Francis's answer, empty() is not correct for choice #1, because in php, the string '0' is equivalent to false - and empty() returns true for all values equivalent to false. So using empty, the code would skip printing if the value was '0'. If you want to exclude the empty string, see Augustu...
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mysqli_fetch_assoc() expects parameter / Call to a member function bind_param() errors. How to get t

...s the reason. Unfortunately, by default such errors are not transferred to PHP, and all you've got is a cryptic error message mentioned above. Hence it is very important to configure PHP and MySQLi to report MySQL errors to you. And once you get the error message, fixing it will be a piece of cake....
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Reusing output from last command in Bash

...ind a file and diff its contents with another file: $ find app -name 'one.php' /var/bar/app/one.php $ diff /var/bar/app/one.php /var/bar/two.php You could do this: $ find app -name 'one.php' | pbcopy $ diff $(pbpaste) /var/bar/two.php The string /var/bar/app/one.php is in the clipboard when ...
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htmlentities() vs. htmlspecialchars()

... From the PHP documentation for htmlentities: This function is identical to htmlspecialchars() in all ways, except with htmlentities(), all characters which have HTML character entity equivalents are translated into these entities....
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Should I mix AngularJS with a PHP framework? [closed]

...l when it comes to interactive HTML5 and model binding. On the other hand, PHP frameworks like Yii enable quick, well-structured, safe and powerful web application development. Both technologies provide sophisticated means for data access, iteration and page layouting. ...
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Iterate over each line in a string in PHP

...is defined as "\r\n", strtok will separate on either character - and as of PHP4.1.0, skip empty lines/tokens. See the strtok manual entry: http://php.net/strtok share | improve this answer ...
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PHP method chaining?

I am using PHP 5 and I've heard of a new featured in the object-oriented approach, called 'method chaining'. What is it exactly? How do I implement it? ...
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How to loop through an associative array and get the key? [duplicate]

...do: foreach ($arr as $key => $value) { echo $key; } As described in PHP docs. share | improve this answer | follow | ...
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Difference between require, include, require_once and include_once?

In PHP: 25 Answers 25 ...
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What is the difference between client-side and server-side programming?

... | | browser | | | web server | | (JavaScript) | | | (PHP etc.) | | | | | | +--------------+ | +--------------+ | client side | server side | <---------- HTML,...