Using PHP explode() to Split Strings

In PHP programming, splitting a string into multiple substrings is common, and the built‑in explode function provides a convenient way to achieve this.

Syntax of explode()

<code>array explode(string $delimiter, string $string [, int $limit = PHP_INT_MAX])</code>

The $delimiter parameter specifies the character or string used to determine where the original string should be split.

The $string parameter is the input string that will be divided.

The optional $limit parameter limits the number of resulting substrings; by default it is PHP_INT_MAX , meaning no limit.

Using explode()

Example 1 – Split by space

<code>$myString = "Hello world! Welcome to PHP.";

$subStrings = explode(" ", $myString);

foreach ($subStrings as $subString) {
    echo $subString . "<br>";
}
</code>

This code splits the string Hello world! Welcome to PHP. at each space and outputs each part using a foreach loop.

Example 2 – Split by comma

<code>$myString = "Apple,Banana,Orange,Strawberry,Mango";

$subStrings = explode(",", $myString);

foreach ($subStrings as $subString) {
    echo $subString . "<br>";
}
</code>

The string Apple,Banana,Orange,Strawberry,Mango is divided at commas, and each fruit name is printed in turn.

Example 3 – Limit the number of splits

<code>$myString = "One,Two,Three,Four,Five";

$subStrings = explode(",", $myString, 3);

foreach ($subStrings as $subString) {
    echo $subString . "<br>";
}
</code>

Here the string One,Two,Three,Four,Five is split by commas but only the first three substrings are returned because of the limit parameter.

Besides explode , PHP also offers other string‑handling functions such as implode and str_split , allowing developers to choose the most suitable tool for their specific needs.