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run code in 200+ php & hhvm versions
Bugs & Features
<?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' ) ); $tmp = ''; foreach ($arr2 as $k) { $tmp[$k['id']] = $k; } foreach ($arr as &$v) { $sn = $tmp[$v['id']]['shop_name']; $sn = $sn ? $sn :''; $v['shop_name'] = $sn; } var_dump($arr); ?>
based on mq43b
Output for 7.1.0 - 7.2.0
Notice: Array to string conversion in /in/f8caE on line 32 Notice: Array to string conversion in /in/f8caE on line 32 Notice: Array to string conversion in /in/f8caE on line 32 Warning: Illegal string offset 'shop_name' in /in/f8caE on line 34 Warning: Illegal string offset 'shop_name' in /in/f8caE on line 34 Warning: Illegal string offset 'shop_name' in /in/f8caE on line 34 array(3) { [0]=> array(3) { ["id"]=> int(1) ["user_name"]=> string(5) "test1" ["shop_name"]=> string(1) "A" } [1]=> array(3) { ["id"]=> int(2) ["user_name"]=> string(5) "test2" ["shop_name"]=> string(1) " " } [2]=> &array(3) { ["id"]=> int(3) ["user_name"]=> string(5) "test3" ["shop_name"]=> string(1) "A" } }
Output for 5.5.0 - 7.0.20
Notice: Undefined offset: 2 in /in/f8caE on line 34 array(3) { [0]=> array(3) { ["id"]=> int(1) ["user_name"]=> string(5) "test1" ["shop_name"]=> string(5) "shop1" } [1]=> array(3) { ["id"]=> int(2) ["user_name"]=> string(5) "test2" ["shop_name"]=> string(0) "" } [2]=> &array(3) { ["id"]=> int(3) ["user_name"]=> string(5) "test3" ["shop_name"]=> string(5) "shop3" } }