PHPPHP9 min read

Working with Strings in PHP

Use built-in PHP string functions to manipulate and format text.

Thomas King
September 24, 2025
2.6k54

Strings are used everywhere. PHP gives many helpers.

Common string functions

$text = " Hello World ";

echo strlen($text);
echo trim($text);
echo strtoupper($text);
echo strtolower($text);
echo str_replace("World", "PHP", $text);

Splitting and joining

$words = explode(" ", "I love PHP");
echo implode("-", $words);

Next: Date and time in PHP.

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