php find string in array

For Web programming, the most important thing is to access and read and write data. There may be many ways to store them, such as strings, arrays, files, and so on. arrays, which can be said to be a more important way of using PHP data. PHP's Array

PHP has a lot of functions about arrays to facilitate array manipulation. Defined: Each entity of an array contains two items: key and value, which can be retrieved by a query key. These keys can be numeric (numerical) or associated (associative)

Learn PHP's array summary "experience", PHP array Summary PHP has a lot of functions for arrays, which makes it easy to manipulate arrays. Defined: The array contains two items per entity: Key and value, which can be obtained by querying the key.

1. The concept of arrays An array is a named range that is used to store a series of variable values. Each array element has an associated index (also a keyword) that can be used to access elements. PHP allows you to use numbers or strings evenly

basic functions of array manipulationThe key name and value of the arrayArray_values ($arr); Gets the value of the array Array_keys ($arr), gets the key name of the array array_flip ($arr), and the values in the array are exchanged with the key

1. Merging Arrays The Array_merge () function merges the arrays together, returning a federated array. The resulting array begins with the first input array parameter and is forced in the order in which the following array parameters appear. In the

1. Merging arrays The Array_merge () function merges the arrays together to return an array of unions. The resulting array starts with the first input array parameter, forcing it sequentially in the order in which the array parameters appear later.

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PHP uses arrays to replace matching items in strings in sequence, and php arrays to replace strings. PHP uses an array to replace the matching items in the string in sequence. The php array replaces the string to see the SQL statement: select *