How does php determine whether the value is in a two-dimensional array
This article mainly introduces php how to judge whether the value is in the two-dimensional array of related knowledge, the content is detailed and easy to understand, the operation is simple and fast, has a certain reference value, I believe you read this php how to determine whether the value in the two-dimensional array article will have a harvest, let's take a look.
Judgment method: 1, loop through the two-dimensional array, syntax "foreach ($arr as $v) {}", will assign the current subarray to "$v"; 2, in the loop body, use in_array () to determine whether the specified value is in the subarray, syntax "in_array (" value ", $v)", and return TRUE if it is.
Operating environment of this tutorial: windows7 system, PHP7.1 version, DELL G3 computer
How does php determine whether the value is in a two-dimensional array?
In php, you can use the foreach statement and the in_array function to determine whether the value is in a two-dimensional array.
1. Use the foreach statement to loop through a two-dimensional array
Iterate through the given two-dimensional array, assigning a subarray of the current array to $v in each loop.
2. In the body of the loop, use in_array () to determine whether the specified value is in the subarray.
In_array (search,array) searches the array for the existence of the specified value, and returns TRUE if the value is found in the array, FALSE otherwise.
Foreach ($arr as $v) {if (in_array ("bb", $v)) {echo "specified value in two-dimensional array";}}
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