CODEWITHSUNDEEP
phpserver
User_FTW
User_FTW

Reputation: 524

Get the PHP version number only

I've been using this...

echo PHP_VERSION;

...to display the version of PHP running on the server, which usually displays something like...

5.4.6.1

But I've just discovered that on some servers I get more than the version number, and instead this gets displayed:

5.4.6.1ububtu1.8

Is there a way I can get just the numbers?

The reason being is I need to check the version of PHP and display a message, something like...

$phpversion = PHP_VERSION;
if($phpversion >= "5.5") {
    echo "All good";
} else {
    echo "Your version of PHP is too old";
}

...but of course if $phpversion contains anything other than numbers then this script won't work properly.

Thanks in advance.

Upvotes: 6

Views: 5895

Answers (7)

Samsquanch
Samsquanch

Reputation: 9146

Taken from an example in the docs (here and here):

if (version_compare(phpversion(), '5.5.0', '>=')) {
    echo "All good";
} else {
    echo "Your version of PHP is too old";
}

Test script:

 <?php

 echo PHP_VERSION;
 echo PHP_EOL;
 echo phpversion();
 echo PHP_EOL;
 echo version_compare(phpversion(), '5.5.0', '>=') ?: "false";
 echo PHP_EOL;
 echo version_compare(phpversion(), '5.6.0', '>=') ?: "false";
 echo PHP_EOL;
 echo version_compare(phpversion(), '5.7.0', '>=') ?: "false";
 echo PHP_EOL;
 echo version_compare('5.4.6.1ububtu1.8', '5.4.0', '>=') ?: "false";
 echo PHP_EOL;
 echo version_compare('5.4.6.1ububtu1.8', '5.5.0', '>=') ?: "false";
 ?>

Output:

$ php test.php
5.6.4-1+deb.sury.org~trusty+1
5.6.4-1+deb.sury.org~trusty+1
1
1
false
1
false

Upvotes: 7

DaveyBoy
DaveyBoy

Reputation: 2924

You could use PHP's variable mangling capabilities to check for a specific version:

<?php
$v=PHP_VERSION;
echo "RAW: ".$v.PHP_EOL;

$n=$v+0;
echo "MANGLED: ".$n.PHP_EOL;

echo "CONSTANT DIRECTLY  MANGLED: ".(PHP_VERSION+0).PHP_EOL;

$u="5.4.6.1ububtu1.8";

echo "From string: ".$u.PHP_EOL;
$nu=$u+0;
echo "From mangled string: ".$nu.PHP_EOL;

Output:

$: ~/test> php -f v.php 
RAW: 5.5.24
MANGLED: 5.5
CONSTANT DIRECTLY  MANGLED: 5.5
From string: 5.4.6.1ububtu1.8
From mangled string: 5.4
$: ~/test>

Upvotes: 0

AKRAM EL HAMDAOUI
AKRAM EL HAMDAOUI

Reputation: 1838

To get full version (5.4.6.1)

  <?php
    preg_match("#^\d+(\.\d+)*#", PHP_VERSION, $match);
    echo $match[0];

It will return 5.4.6.1 in your example

To get version as you need (5.4)

preg_match("#^\d.\d#", "5.4.6.1ububtu1.8", $match);
echo $match[0];

It will return 5.4 in your example

Test here

Upvotes: 9

Elin
Elin

Reputation: 6770

If you know for sure that you are always at or above 5.2.7.

http://php.net/manual/en/reserved.constants.php#reserved.constants.core

$phpversionmajor = PHP_VERSION_MAJOR;
$phpversionmajor = PHP_VERSION_MINOR;
if($phpversionmajor >= 5 && $phpversionminor >= 5) {
    echo "All good";
} else {
    echo "Your version of PHP is too old";
}

Upvotes: 1

Abhinav
Abhinav

Reputation: 8168

You can do like this

echo filter_var(PHP_VERSION, FILTER_SANITIZE_NUMBER_FLOAT,
FILTER_FLAG_ALLOW_FRACTION);

The second Parameter will sanitize the results according to a FLOAT representation and third parameter allows fractions like a 'DOT'

Yo would want to take a loot at the PHP Manual- Sanitizing Filers

Upvotes: 0

Mr. DOS
Mr. DOS

Reputation: 433

PHP provides a convenient function, version_compare, for comparing SemVer-like version numbers. While you could do a whole bunch of manual string wrangling, I suspect in your use case you can make your life much easier by taking advantage of what comes in the box.

Upvotes: 4

viral
viral

Reputation: 3743

I faced the same issue some days ago, I found this snippet from PHP Docs

// PHP_VERSION_ID is available as of PHP 5.2.7, if our 
// version is lower than that, then emulate it
if (!defined('PHP_VERSION_ID')) {
    $version = explode('.', PHP_VERSION);

    define('PHP_VERSION_ID', ($version[0] * 10000 + $version[1] * 100 + $version[2]));
}

Now, PHP_VERSION_ID constant contains, what you want.

Link here

Upvotes: 1

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