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$arr=array(
array('fid'=>'32','fup'='87','type'=>'sub'),
array('fid'=>'24','fup'='87','type'=>'sub'),
array('fid'=>'87','fup'='22','type'=>'sub'),
array('fid'=>'242','fup'='5','type'=>'ub'),
array('fid'=>'876','fup'='5','type'=>'sub')
);
$arr=array(
array('fid'=>'32','fup'=>'87','type'=>'sub'),
array('fid'=>'24','fup'=>'87','type'=>'sub'),
array('fid'=>'87','fup'=>'22','type'=>'sub'),
array('fid'=>'242','fup'=>'5','type'=>'ub'),
array('fid'=>'876','fup'=>'5','type'=>'sub'),
);
foreach($arr as $k=>$v){
$arr[$k]['style'] = $k%2==0 ? 'bred' : 'bgreen';
}
print_r($arr);
$arr=array(
array('fid'=>'32','fup'='87','type'=>'sub'),
array('fid'=>'24','fup'='87','type'=>'sub'),
array('fid'=>'87','fup'='22','type'=>'sub'),
array('fid'=>'242','fup'='5','type'=>'ub'),
array('fid'=>'876','fup'='5','type'=>'sub'),
);
for($i=0; $i<count($arr); $i++) {
$arr[$i]['style;] = $i % 2 ? 'bgreen' : 'bred';
}