In an app that I am building, I would like to create an array using contents that I have in a variable. This is my code:
$cont = '"q","w","e","r","t",';
$num = array(eval($cont));
foreach ($num as $v) {
echo "" . $v . "<br>OK<br><br>";
}
It returns nothing. I tried it with the eval, and without What am I doing wrong?
Guess what you are looking after is explode() :
$cont = '"q","w","e","r","t","y"';
$num = explode(',',$cont);
foreach ($num as $v) {
echo "" . $v . "<br>OK<br><br>";
}
outputs
"q"
OK
"w"
OK
..
eval is evil, most of time. You can use preg_match_all instead:
$cont = '"q","w","e","r","t",';
preg_match_all("/\"([^\"]+)\"/", $cont, $matches);
$num = $matches[1];
foreach ($num as $v) {
echo "$v<br>OK<br><br>";
}
Or simply create the array:
$num = array("q","w","e","r","t");
foreach ($num as $v) {
echo "$v<br>OK<br><br>";
}
But if all these warnings and alternatives are not enough for you, and you insist on using eval, try this:
$cont = '"q","w","e","r","t",';
eval("\$num = array($cont);");
foreach ($num as $v) {
echo "$v<br>OK<br><br>";
}
evala random half-formed expression. It has to be valid PHP.