Are those expresions exactly the same?
[code=php] SELECT * from db1, db2 WHERE (db1.Ref=db2.Ref AND Localidad=’$Localidad’ AND Pepino != ‘0’) [/code]
[code=php] $llegada=Pepino; SELECT * from db1, db2 WHERE (db1.Ref=db2.Ref AND Localidad=’$Localidad’ AND $llegada != ‘0’) [/code]
[code=php] $llegada='Pepino'; SELECT * from db1, db2 WHERE (db1.Ref=db2.Ref AND Localidad='$Localidad' AND '$llegada' != '0') [/code]
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