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This article mainly shows you the "PHP array and string conversion between each other", the content is easy to understand, clear, hope to help you solve doubts, the following let Xiaobian lead you to study and learn how to convert arrays and strings in PHP "this article.

Explode () function-converts a string to an array

The explode () function can use a string to split another string and return an array. The syntax format of the explode () function is as follows:

Explode ($delimiter, $string [, $limit])

Among them, it should be noted that:

The key to understanding this function is the delimiter, the parameter $delimiter, which represents the delimiter used to separate strings, which is used to mark what is used to make independent array elements. The parameter $string represents a delimited string, and the parameter $limit is an optional parameter that can be empty.

Next, let's take a look at the use of the explode () function through an example, as follows:

Output result:

From the above example, we can see that the explode () function converts a string into an array, where the function's argument $limit is empty in the above example.

It should be noted that when the parameter $limit is empty, the function returns all array elements; when the parameter $limit is positive, the maximum number of array elements returned is to fill in the number of $limit; when the parameter $limit is negative, it returns all elements except the last $limit element; if the parameter $limit is 0, it is regarded as 1.

Examples are as follows:

Output result:

In the above example, the results returned are different through different $limit parameters, but the conversion from a string to an array is completed through the explode () function. Next, let's take a look at how an array is converted to a string.

Implode ()-an array converts to a string

An one-dimensional array can be converted into a string through the implode () function in PHP. The syntax format of this function is as follows:

Implode ($glue, $array)

It should be noted that $glue can be seen as a glue character, and its function is to concatenate each element in the array, and the parameter $glue is an empty string by default. The parameter $array represents the string that needs to be converted.

Next, let's take a look at the use of the implode () function through an example, as follows:

Output result:

In the above example, the parameter $glue is set to empty, that is, it can be unwritten, but if it is written, the glue character is inserted in the middle of each array element to convert to a string.

Examples are as follows:

Output result:

In the above example, the array conversion string is performed with a different parameter $glue.

Conversion between string and array

Let's take a look at the conversion between an array and a string through an example, as follows:

Output result:

These are all the contents of the article "how to convert arrays and strings in PHP". Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

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