query: undefined index "subject" in PHP
positive_passages.docid: 2005
positive_passages.text: "Notice: Undefined variable", "Notice: Undefined index", and "Notice: Undefined offset" using PHP
negative_passages.docid: 136411
negative_passages.text: PHP - Variable inside variable?
negative_passages.docid: 43644
negative_passages.text: How can I access an object property named as a variable in php?
negative_passages.docid: 107220
negative_passages.text: Parse error: syntax error, unexpected '[' with php 5.3
negative_passages.docid: 97690
negative_passages.text: Initializing PHP class property declarations with simple expressions yields syntax error
negative_passages.docid: 33796
negative_passages.text: How to re-index the values of an array in PHP?
negative_passages.docid: 153442
negative_passages.text: __PHP_Incomplete_Class_Name wrong
negative_passages.docid: 50915
negative_passages.text: Undefined variable problem with PHP function
negative_passages.docid: 104014
negative_passages.text: How do I enable error reporting in PHP?
negative_passages.docid: 74155
negative_passages.text: How do I get PHP errors to display?
negative_passages.docid: 117703
negative_passages.text: /index.php/ appearing in generated clean URIs
negative_passages.docid: 133763
negative_passages.text: Why is PHP not replacing the variable in string?
negative_passages.docid: 153192
negative_passages.text: Why doesn't PHP permit private const?
negative_passages.docid: 149243
negative_passages.text: PHP Object Property has brackets in it
negative_passages.docid: 7250
negative_passages.text: Reference - What does this error mean in PHP?
negative_passages.docid: 24024
negative_passages.text: PHP and MySQL error: Object of class mysqli_result could not be converted to string
negative_passages.docid: 29714
negative_passages.text: header("location") causes [500] internal server error?