创建数组php的问题

Question

I'm writing a PHP application, and one of the features is be able to query gene interactions in all our tables (gene_r, genes_newL_dn, genes_newL_up, genes_oldL_up, genes_oldL_dn) . So I have the following PHP function to query all those databases at once.

public function getAllInteractions($input){
    $data = array();

    $sql_list = (
        "SELECT * FROM genes_r JOIN drugs_r ON drugs_r.id = genes_r.id WHERE drug_name='$input' OR gene_name='$input'",
        "SELECT * FROM genes_newL_dn JOIN drugs_newL_dn ON drugs_newL_dn.id = genes_newL_dn WHERE drug_name='$input' OR gene_name='$input'",
        "SELECT * FROM genes_newL_up JOIN drugs_newL_up ON drugs_newL_up.id = genes_newL_up WHERE drug_name='$input' OR gene_name='$input'",
        "SELECT * FROM genes_oldL_dn JOIN drugs_oldL_dn ON drugs_oldL_dn.id = genes_oldL_dn WHERE drug_name='$input' OR gene_name='$input'",
        "SELECT * FROM genes_oldL_up JOIN drugs_oldL_up ON drugs_oldL_up.id = genes_oldL_up WHERE drug_name='$input' OR gene_name='$input'"
    );

    foreach($sql_list as $sql){
        $query = $this->db->query($sql);
        // case 1 : SQL Query invalid / empty results
        if(!$query || $query->num_rows() == 0) {
            continue;   
        }
        else {
            $id = $query->row()->id;
            $sql = "SELECT interaction from matrix_r WHERE id='$id'";
            $query = $this->db->query($sql);
            array_push($data, $query->row());
        }   
    }

    return $data;
}

However, I'm getting the following error:

PHP Parse error:  syntax error, unexpected ',' in 
/chemicalgenomics/ci/application/models/search_model.php on line 81

I'm not getting why does not like the ','. It's supposed to be an array of strings. Could someone please help me with that? Thanks

PS: Line 81 is the first line in the array: "SELECT * FROM ...

Answer 1

You initialize the array wrong, you need to place the array at the begining:

$sql_list = array(
    "SELECT * FROM genes_r JOIN drugs_r ON drugs_r.id = genes_r.id WHERE drug_name='$input' OR gene_name='$input'",
    "SELECT * FROM genes_newL_dn JOIN drugs_newL_dn ON drugs_newL_dn.id = genes_newL_dn WHERE drug_name='$input' OR gene_name='$input'",
    "SELECT * FROM genes_newL_up JOIN drugs_newL_up ON drugs_newL_up.id = genes_newL_up WHERE drug_name='$input' OR gene_name='$input'",
    "SELECT * FROM genes_oldL_dn JOIN drugs_oldL_dn ON drugs_oldL_dn.id = genes_oldL_dn WHERE drug_name='$input' OR gene_name='$input'",
    "SELECT * FROM genes_oldL_up JOIN drugs_oldL_up ON drugs_oldL_up.id = genes_oldL_up WHERE drug_name='$input' OR gene_name='$input'"
);

If you have PHP 5.4 or greater (not that many web hosts do however), you can use the new short array syntax which you were close to, but the character is a bracket ( [ ) rather than a parenthesis ( ( ):

$sql_list = [
    "SELECT ...",
    "SELECT ...",
];

Answer 2

$sql_list = array(x, y, z); is the right syntax for PHP arrays. So, in your code, it should be:

$sql_list = array(
    "SELECT * FROM genes_r JOIN drugs_r ON drugs_r.id = genes_r.id WHERE drug_name='$input' OR gene_name='$input'",
    "SELECT * FROM genes_newL_dn JOIN drugs_newL_dn ON drugs_newL_dn.id = genes_newL_dn WHERE drug_name='$input' OR gene_name='$input'",
    "SELECT * FROM genes_newL_up JOIN drugs_newL_up ON drugs_newL_up.id = genes_newL_up WHERE drug_name='$input' OR gene_name='$input'",
    "SELECT * FROM genes_oldL_dn JOIN drugs_oldL_dn ON drugs_oldL_dn.id = genes_oldL_dn WHERE drug_name='$input' OR gene_name='$input'",
    "SELECT * FROM genes_oldL_up JOIN drugs_oldL_up ON drugs_oldL_up.id = genes_oldL_up WHERE drug_name='$input' OR gene_name='$input'"
);

If you are using PHP 5.4, there's shortened syntax available:

$sql_list = [
    "SELECT * FROM genes_r JOIN drugs_r ON drugs_r.id = genes_r.id WHERE drug_name='$input' OR gene_name='$input'",
    "SELECT * FROM genes_newL_dn JOIN drugs_newL_dn ON drugs_newL_dn.id = genes_newL_dn WHERE drug_name='$input' OR gene_name='$input'",
    "SELECT * FROM genes_newL_up JOIN drugs_newL_up ON drugs_newL_up.id = genes_newL_up WHERE drug_name='$input' OR gene_name='$input'",
    "SELECT * FROM genes_oldL_dn JOIN drugs_oldL_dn ON drugs_oldL_dn.id = genes_oldL_dn WHERE drug_name='$input' OR gene_name='$input'",
    "SELECT * FROM genes_oldL_up JOIN drugs_oldL_up ON drugs_oldL_up.id = genes_oldL_up WHERE drug_name='$input' OR gene_name='$input'"
];