Compare dates in php

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Compare dates in php

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#1 by (1 votes)
#2 by (1 votes)

2

Why this example does not work for me:

$fecha = new \DateTime("2016-05-17 0:0:0");
$fechaCounter = clone $fecha;
$fechaLimite = clone $fecha;

while ($fechaCounter <= $fechaLimite->add(new \DateInterval("P2D"))) {
    echo "hola mundo";
    $fechaCounter->add(new \DateInterval("P1D"));
}

Instead of printing 2 times hello the world causes an infinite loop.

Thank you in advance. Greetings

Edited:

So if it works:

$fecha = new \DateTime("2016-05-17 0:0:0");
$fechaCounter = clone $fecha;
$fechaLimite = clone $fecha;
$fechaLimite->add(new \DateInterval("P2D"));
echo $fechaLimite->format("d-m-Y H:i:s");
while ($fechaCounter <= $fechaLimite) {
    echo $fechaCounter->format("d-m-Y H:i:s")."\n";
    $fechaCounter->add(new \DateInterval("P1D"));
}

php

asked by Red 15.05.2016 в 15:19

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2 answers

How do I sum up the total of several grades? Travis CI: "UnCSS: Configuration missed" in Travis CI

score 1 · Answer 1

Is that when executing

$fechaLimite->add(new \DateInterval("P2D"))

It is modified each time $fechaLimite . If we look at the manual we see that add modifies the object Date : link

You have to be careful in each function or object to know if the functions treat the objects as mutable or immutable (that is, if they modify them or not). That changes for each language.

score 1 · Answer 2

Try this code using DateTime :: diff :

View Demo

$fechaHoy = new DateTime("2016-05-17 00:00:00");
$fechaLimite = clone $fechaHoy;    
$fechaLimite->add(new DateInterval("P2D"));

// Calcula la diferencia y devuelve el resultado
echo = $fechaHoy->diff($fechaLimite)->format('%a'); // 2