问题
array_shift() expects parameter 1 to be array, null given in /home5/.../php/symfony/command/sfCommandManager.class.php
is the error I'm getting.
I am trying to set up a Symfony 1.4 project using Bluehost, and I receive this error in the error log when I try to run symfony generate:project project name.
回答1:
You need to give the array_shift() the parameter! Look this example:
$stack = array("orange", "banana", "apple", "raspberry");
$fruit = array_shift($stack); // Here you give the parameter
print_r($fruit);
You give the null parameter on array_shift() and you need to change it!
Update:
array_shift() shifts the first value of the array off and returns it, shortening the array by one element and moving everything down. All numerical array keys will be modified to start counting from zero while literal keys won't be touched. Read here for more
来源：https://stackoverflow.com/questions/18027149/php-warning-array-shift-expects-parameter-1-to-be-array-null-given-in-home5