Strange Syntax Error MySQL Error when using PHP -


i've got syntax error near line 1 somewhere in code:

//... $nr = 126; $expl = "'test'"; $da = "'2003-12-01'"; $tax = 2.5; $cost = 100;  //here error $sql = "insert tbl (type, nr, explan, date, tax, cost) values('example'," + $nr + ",'"+ $expl + "','" + $da + "'," + $tax + "," + $cost + ");";

this error log:

error: 103.5 have error in sql syntax; check manual corresponds mysql server version right syntax use near '103.5' @ line 1

i'm using php version 5.6.3 , mysql version 5.6.21

i cant figure out, problem :(

you're using + concatenate strings, doesn't work in php. have use ..

there strange arithmatic going on produces 103.5, 2.5 + "," + 100. "," converted int(1) or something.


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