How to use the key value of the post array to create a variable with the same name and assign a value in PHP_PHP Tutorial

How PHP uses the key value of the post array to create a variable with the same name and assign a value

This article describes the example of how PHP uses the key value of the post array to create a variable with the same name and assign a value. Share it with everyone for your reference. The details are as follows:

This code can automatically create a variable with the same name based on the key value of the post array. This function is very convenient to use without having to declare the variable in advance

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$expected=array('username','age','city','street'); foreach($expected as $key){ if(!empty($_POST[$key])){ ${key}=$_POST[$key]; } else{ ${key}=NULL; } } ?>

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$expected=array('username','age','city','street');

<🎜>foreach($expected as $key){<🎜> <🎜>if(!empty($_POST[$key])){<🎜> <🎜>${key}=$_POST[$key];<🎜> <🎜>}<🎜> <🎜>else{<🎜> <🎜>${key}=NULL;<🎜> <🎜>}<🎜> <🎜>}<🎜> <🎜>?>

I hope this article will be helpful to everyone’s PHP programming design. http://www.bkjia.com/PHPjc/979232.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/979232.htmlTechArticlephp uses the key value of the post array to create a variable with the same name and assign a value. This example describes how php uses the key value of the post array. A method to create a variable with the same name and assign a value. Share it with everyone for your reference...