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php can return the corresponding array. There are two methods: 1. Use the "array_filter()" function to filter the array elements according to the conditions of the callback function and return a new array that meets the conditions; 2. Use "foreach" Loop through the array to determine whether each element meets the conditions, and then put the elements that meet the conditions into a new array.
Operating system for this tutorial: Windows 10 system, php8.1.3 version, Dell G3 computer.
To return the corresponding array element based on a certain value, you can use the following method:
Use the array_filter() function:
This function can filter array elements according to the conditions of the callback function and return a new array that meets the conditions
$array = array( array('id' => 1, 'name' => 'apple'), array('id' => 2, 'name' => 'banana'), array('id' => 3, 'name' => 'orange') ); $id = 2; // 要查找的 ID result=arrayfilter(result = array_filter(result=arrayfilter(array, function(item)use(item) use (item)use(id) { return item[′id′]==item['id'] == item[′id′]==id; });
Use foreach loop to traverse:
By traversing the array, determine whether each element meets the conditions, and then put the elements that meet the conditions into a new array.
$array = array( array('id' => 1, 'name' => 'apple'), array('id' => 2, 'name' => 'banana'), array('id' => 3, 'name' => 'orange') ); $id = 2; // 要查找的 ID $result = array(); foreach (arrayasarray as arrayasitem) { if (item[′id′]==item['id'] == item[′id′]==id) { result[]=result[] = result[]=item; } }
Both of the above two methods can return the corresponding array element based on a certain value. Please choose the appropriate method according to the specific situation.
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