How can I reference an array element when using namespacing backslashes?

Question

I am trying to instantiate an object from a class, substituting an element from an array as the classname, but I keep getting PHP parse errors. I am thinking the \ character is somehow escaping the $ of the array varaiable? i.e.

$this->controller = new \app\controllers\$exploded_url[0];

gives

Parse error: syntax error, unexpected '$', expecting identifier (T_STRING)

$this->controller = new \app\controllers\${exploded_url[0]};

gives

Parse error: syntax error, unexpected '$exploded_url' (T_VARIABLE), expecting identifier (T_STRING)

How can I fix this parse error?

Sumurai8 · Accepted Answer · 2015-08-21 23:06:48Z

1

did you tried:

$temp = "\\app\\controllers\\".${exploded_url[0]};
$this->controller = new $temp;

edited Aug 21, 2015 at 23:06

Sumurai8

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answered Aug 21, 2015 at 19:59

volkinc

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4 Comments

Sumurai8 Over a year ago

something is off in that syntax if I look at the syntax highlighting

volkinc Over a year ago

but did you get idea? you can call new only from string.

the_velour_fog Over a year ago

yes, that does work, I thought is might have been possible without using a $temp placeholder. Also your closing string is probably going to be escaped by the backslash your syntax should be "\app\controllers\\"

Marc B Over a year ago

namespaces in strings are just strings, meaning the backslash escapes the quote.

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