What are the differences between echo and printf in PHP in terms of outputting strings?

The main differences between echo and printf in PHP are that echo is a language construct while printf is a function, and echo can output multiple values separated by commas while printf requires a format string and arguments. Echo is generally faster and more commonly used for simple string outputs, while printf is more versatile and allows for formatting strings with placeholders. 

// Using echo to output a string
echo "Hello, World!";

// Using printf to output a formatted string
$name = "John";
$age = 25;
printf("My name is %s and I am %d years old.", $name, $age);

Keywords

echo printf outputting strings PHP differences

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