Hello,

Description of problem:
With php-pdo on RHEL v7.6 the debugDumpParams function of PDOStatement truncate the SQL query to 500 characters.

Version-Release number of selected component (if applicable):
php-pdo-5.4.16-46.el7.x86_64

How reproducible:
Install php and php-pdo packages and select a query with more 500 characters.
My SQL query :
 $stmt = $pdo->prepare("SELECT d.id, d.numDemande, s.reference, CAST(d.saisieDate AS CHAR) as saisieDate, CAST(d.saisieHeure AS CHAR) as saisieHeure,  d.nom, d.prenom, CONCAT(a.rue1, ' ', a.rue2, ' ', a.codePostal, ' ', a.ville) AS adresse, d.dateNaissance, u.codePreleveur as prelevePar, CAST(d.demandeDate AS CHAR) as demandeDate  from silDemande d LEFT JOIN silDemandePrelevement p ON p.idDemande=d.id LEFT JOIN silPreleveur u ON p.prelevePar=u.id LEFT JOIN site s ON d.idSite=s.id LEFT JOIN silPatientAdresse a ON d.idAdresse=a.id WHERE d.demandeDate = date(adddate(now(), interval ? day)) AND u.codePreleveur='DOMI' AND d.saisieHeure > ? AND d.saisieDate=date(now()) ORDER BY d.saisieHeure ASC;");


Steps to Reproduce:
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Actual results:
SQL: [675] SELECT d.id, d.numDemande, s.reference, CAST(d.saisieDate AS CHAR) as saisieDate, CAST(d.saisieHeure AS CHAR) as saisieHeure,  d.nom, d.prenom, CONCAT(a.rue1, ' ', a.rue2, ' ', a.codePostal, ' ', a.ville) AS adresse, d.dateNaissance, u.codePreleveur as prelevePar, CAST(d.demandeDate AS CHAR) as demandeDate  from silDemande d LEFT JOIN silDemandePrelevement p ON p.idDemande=d.id LEFT JOIN silPreleveur u ON p.prelevePar=u.id LEFT JOIN site s ON d.idSite=s.id LEFT JOIN silPatientAdresse a ON d.idAd


Expected results:
SQL: [675] SELECT d.id, d.numDemande, s.reference, CAST(d.saisieDate AS CHAR) as saisieDate, CAST(d.saisieHeure AS CHAR) as saisieHeure,  d.nom, d.prenom, CONCAT(a.rue1, ' ', a.rue2, ' ', a.codePostal, ' ', a.ville) AS adresse, d.dateNaissance, u.codePreleveur as prelevePar, CAST(d.demandeDate AS CHAR) as demandeDate  from silDemande d LEFT JOIN silDemandePrelevement p ON p.idDemande=d.id LEFT JOIN silPreleveur u ON p.prelevePar=u.id LEFT JOIN site s ON d.idSite=s.id LEFT JOIN silPatientAdresse a ON d.idAdresse=a.id WHERE d.demandeDate = date(adddate(now(), interval 1 day)) AND u.codePreleveur='DOMI' AND d.saisieHeure > '13:00:00' AND d.saisieDate=date(now()) ORDER BY d.saisieHeure ASC;


Additional info:
The bug was fixed on PHP upstream : https://bugs.php.net/bug.php?id=69356