How to Convert a String Array to a Number Array in Bulk Using array_map and explode Functions

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<p></span><?php<br>
/**</p>
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<p>How to convert a string array to a number array in bulk using array_map and explode functions?</p>
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<p>In PHP, we often encounter this situation: we have a string array where each element is a comma-separated number string,</p>
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<p>and we want to convert them into a numeric array. Using array_map and explode functions can achieve this efficiently.</p>
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<p>Example scenario:</p>
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<p>$stringArray = [</p>
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"4,5,6",

"7,8,9"

[1, 2, 3],

[4, 5, 6],

[7, 8, 9]

// Define the string array
$stringArray = [
"1,2,3",
"4,5,6",
"7,8,9"
];

// Use array_map and explode to convert in bulk
$numberArray = array_map(function($item) {
// explode splits the string into an array by commas
$parts = explode(",", $item);
// array_map converts each element to an integer
return array_map('intval', $parts);
}, $stringArray);

// Output the result
print_r($numberArray);

/**

• Code analysis:

• 1. Outer array_map loop: processes each element of the string array.

• 2. explode(",", $item): splits a single string into a string array.

• 3. Inner array_map('intval', $parts): converts each element of the string array into an integer.

• Advantages of this approach:

• • Simple and readable code.

• • Supports string arrays of any length.

• • Easily extensible, for example, to support float conversion by using 'floatval'.
    */
    ?>

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• Related Tags:

  array_map explode