there is no warning because there is actually nothing to warn about. when you say $foo = $bar you're just assigning the value and there will be no conditions to evaluate. Inside an `if' conditional, the value assigned to the LHS will be used as is, like 
$bar = 2;
if($foo = $bar) {
# do something
}

[download]
is same as 
if(2){
# do something
}

[download]

In reply to Re: No warning when assiging to a variable by code-ninja
in thread No warning when assiging to a variable by mikeraz

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