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PHP syntax - Printable Version +- CodeIgniter Forums (https://forum.codeigniter.com) +-- Forum: Archived Discussions (https://forum.codeigniter.com/forumdisplay.php?fid=20) +--- Forum: Archived Development & Programming (https://forum.codeigniter.com/forumdisplay.php?fid=23) +--- Thread: PHP syntax (/showthread.php?tid=29824) |
PHP syntax - El Forum - 04-22-2010 [eluser]Iwasignited[/eluser] Hello everyone. I know this problem is not Codeigniter related but this forum is my first PHP programming forum (I dont know any other) so I decided to post it here, please help me. I see some people write this Code: &$var And also Code: === Code: !== Looking forward to hearing from you soon. Thanks so much. Sorry for my English PHP syntax - El Forum - 04-22-2010 [eluser]danmontgomery[/eluser] http://www.whypad.com/posts/php-what-is-the-ampersand-preceding-variables/193/ http://php.net/manual/en/language.operators.comparison.php PHP syntax - El Forum - 04-22-2010 [eluser]WanWizard[/eluser] Using an & means you're referring to the variable by reference: http://php.net/manual/en/language.references.php === means you not only want to compare the value, but also the type: http://www.php.net/manual/en/language.operators.comparison.php !== means the same, but in a 'not' context. So: Code: '1' === 1; // this is FALSE Compare with: Code: '1' == 1; // this is TRUE PHP syntax - El Forum - 04-23-2010 [eluser]Tominator[/eluser] I show you example with &: Code: $a = 1; |