PHP程式語言的explode()函數是一個內建函數，它有助於將一個字串分割成許多不同的字串。 explode() 函數有助於根據字串的分隔符號分割字串，這表示它將在分隔符號字元出現/出現的任何地方分割字串。這個explode()函數將會傳回一個數組，其中包含分割原始字串後形成的字串/字串。 PHP的explode()函數通常只接受三個參數，將一個字串分割成許多字串元素並儲存到一個陣列中。就像把大繩子切成許多小繩子等等。
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文法：
explode(separator1, OriginalString1, No.ofElements1)
PHP程式語言的explode()函數是基於上述三個參數工作。它們是 Separator1、OriginalString1 和 No.ofElements1 參數。它的工作原理是藉助explode()函數內的參數將字串分割成更小的字串。所有這些較小的字串元素都儲存在帶有索引值的陣列中，並且也基於explode()函數的參數。
參數說明：
explode() 函數的參數實際上接受三個參數，但其中只有兩個參數是必需的，一個參數是可選參數。
1。 Separator1/Delimeter：PHP程式語言的Separator1參數實際上指定了字串必須分割的一些臨界點，這意味著每當在字串元素中找到該字串字元時，它就像徵著結束一個數組元素的開頭和另一個陣列元素的開頭。此 delimeter/Separator1 參數為必填參數。
2。 OriginalString1: PHP 程式語言的OriginalString1 參數實際上是一個原始字串，用於將一個字串拆分為多個字串，並且僅當字串內部存在可用字元時才將其儲存在陣列中。這個OriginalString1參數也是必選參數。
3。 No.ofElements1/Limit: 此參數為可選參數，非強制。此參數有助於指定數組元素的數量。此參數可以是任意類型的整數。
可以是正整數、負整數或零整數。
傳回值型別：
explode() 函數的傳回值類型是帶有字串清單的單一陣列。
下面給出的是提到的例子：
這是考慮字串之間的空格將單一字串拆分為許多小字串的範例。在下面的 PHP 標籤範例中，建立了一個變數“$s1”，並將一個字串句子指派給 $s1 變數。然後print_r()函數與其中的explode()函數一起使用。這裡separator1/delimeter參數是空格“ ”，$s1是輸入參數/原始字串，然後這裡沒有提到任何參數。這裡沒有 limit/No.ofElements1 參數，因此字串的分割沒有限制。分割後，數組索引值內部將儲存小字串，並在 print_r() 函數的幫助下列印。
文法：
<?php
$s1 = "My Name is Pavan Kumar Sake";
print_r (explode(" ",$s1));
?>輸出：
This is the example of implementing with limit value “0”. At first, a variable “$stra” is created and this variable is also assigned with a string value ‘car1, bus1, motorbike1, cycle1’. Then print_r() function is made along with the explode() function in it. In the explode() function, “,” is used as separator1 parameter, $stra variable value is used as OriginalString1 Parameter and value “0” is used as No.ofElements1 Parameter. It is mentioned in the parameters description that if the No.ofElements1/Limit value is mentioned as 0 then the whole original string is considered as one single string array element. This will be printed as shown in the output. Then print function is used to print line break.
Syntax:
<?php
$stra = 'car1, bus1, motorbike1, cycle1';
print_r(explode(',',$stra,0));
?>Output:
This is the example of implementing the string splitting with the help of the positive integer as No.ofElements1/limit Parameter. Here at first, a string variable called “$strab” is created with the string value ‘car1, bus1, motorbike1, cycle1’. Then print_r() function is used along with the explode() function along with the three parameters. Here “,” is the Separator1 parameter, “$strab” is the original string element which is nothing but OriginalString1 parameter, “2” is the No.ofElements1/limit Parameter. According to the parameters description, if the positive integer value is passed then n-1 array indexes values will splitted and stored and for N-1 index value, remaining whole string will be printed.
Syntax:
<?php
$strab = 'car1, bus1, motorbike1, cycle1';
print_r(explode(',',$strab,2));
?>Output:
This is the program of implementing the string splitting function by using different type of integer values for No.ofElements1/limit parameter. So that one can know what actually happens for different parameters which are acting inside of the explode() function. For the first explode() function, the whole original string is considered as only one array element. Then value “4” is used for the second explode() function. For this, n-1=3 array indexes string values will be printed but for n-1 array index the whole remaining string will be printed. Then for the third explode() function, negative integer value(-N) is used. So at N array index values the string will be trimmed and will be printed starting from the 0 index value.
Syntax:
<?php
$Original_str1 = "Hello, IamPavan Kumar Sake-Write, BusinessMan, PhysicsNerd.";
print_r (explode (" ",$Original_str1, 0));
print "\n";
print_r (explode (" ",$Original_str1, 4));
print "\n";
print_r (explode (" ",$Original_str1, -3));
print "\n";
?>Output:
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