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run code in 150+ php & hhvm versions
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<?php $arr = array( array( 'id' => 1, 'user_name'=>'test1' ), array( 'id' => 2, 'user_name'=>'test2' ), array( 'id' => 3, 'user_name'=>'test3' ) ); $arr2 = array( array( 'id' => 1, 'shop_name'=>'shop1' ), array( 'id' => 5, 'shop_name'=>'shop2' ), array( 'id' => 3, 'shop_name'=>'shop3' ) ); foreach($arr as $key => &$value) { //$value['shop_name']=''; } unset( $value ); foreach($arr as $k2 =>&$v2) {$v2['shop_name']=''; foreach($arr2 as $k =>$v) { if($v2['id'] == $v['id']) { $v2['shop_name'] = $v['shop_name']; } } } print_r($arr);
Output for 5.0.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
Array ( [0] => Array ( [id] => 1 [user_name] => test1 [shop_name] => shop1 ) [1] => Array ( [id] => 2 [user_name] => test2 [shop_name] => ) [2] => Array ( [id] => 3 [user_name] => test3 [shop_name] => shop3 ) )
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected '&', expecting T_VARIABLE or '$' in /in/g9bam on line 32
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1
Parse error: parse error, unexpected '&', expecting T_VARIABLE or '$' in /in/g9bam on line 32
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_VARIABLE' or `'$'' in /in/g9bam on line 32
Process exited with code 255.